Expansion Joints
Maxi-Joint® Rubber Expansion Joints
General Rubber’s Maxi-Joint brand represents our state-of-the-art line of rubber expansion joints, flexible connectors, rubber flanged hoses and accessories, as well as spray shields and penetration seals. Since our inception in 1950, General Rubber has designed and developed a wide range of performance products used in the most demanding applications. Improved performance and engineered solutions are accomplished by incorporating advanced materials of construction and technologies to what otherwise would be considered a conventional product line.
Piping and ducting systems require support and flexibility as critical design elements to ensure continuous and safe operation. The features and benefits of our performance expansion joint designs will achieve these critical elements by absorbing system forces and displacements, replacing them with the expansion joint’s low stiffness (spring rate).
Additionally, they are designed to reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment, and relieve pipe and anchor stresses.
The selection and application of General Rubber’s unrestrained expansion joints represent the most cost-effective arrangement when they are used in rigid piping systems with main anchors and numerous guides at specific spacing.
The selection and application of General Rubber’s advanced restrained expansion joints can be used to provide system flexibility while restraining pressure thrust forces and other external loads. This approach allows for an optimal design with a smaller footprint. The economic benefits of using advanced restrained expansion joints also include—but are not limited to—fewer guides, anchors and supports.
Piping Expansion Joints
Single Wide Arch Style 1101
General Rubber's Style 1101 single (1) wide arch rubber expansion joints are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover, and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint, or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Standard or custom face-to-face dimensions
- Wide flowing arch design
- Exceptional all directional movement capability
- Virtually eliminates sediment buildup
- Absorbs noise, vibration and shock
- Higher pressure rating than conventional expansion joints
- Hot dip galvanized retaining rings standard
- Other standard drilling available, including ASA 300, DIN, PN, JIS, API, and Navy
- Excellent chemical and abrasion resistance
- Full vacuum rating (30" Hg) for style 1202
- 250°F continuous service standard (400°F available)
- Compensates for minor misalignment and offset
- Low stiffness and deflection forces
- Integrally flanged design, no gaskets required
- Simple to install and high strength
- Provides easy access to piping and equipment
- Filled arch design available
TECHNICAL RESOURCES
Double Wide Arch Style 1102
General Rubber's Styles 1102 and 1202, double (2) wide arch rubber expansion joints have twice the all-directional movement capabilities with half the spring rates of our single arch design. Additionally, they are designed to reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Double the movement with half the spring rate
- Standard or custom face-to-face dimensions
- Available in custom offset arrangements and sizes not shown
- Virtually eliminates sediment buildup
- Higher pressure rating than conventional expansion joints
- Style 1202 designates full vacuum rating (30" Hg) in all sizes
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- Filled arch design available
- High strength and simple to install
TECHNICAL RESOURCES
Triple Wide Arch Style 1103
General Rubber's Styles 1103 and 1203, triple (3) wide arch rubber expansion joints have triple the all-directional movement capabilities with one-third the spring rates of our single arch design. Additionally, they are designed to reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Triple the movement with one-third the spring rate Triple the movement with one-third the spring rate
- Standard or custom face-to-face dimensions
- Available in custom offset arrangements and sizes not shown
- Virtually eliminates sediment buildup
- Higher pressure rating than conventional expansion joints
- Style 1203 designates full vacuum rating (30" Hg) in all sizes
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- Filled arch design available
- High strength and simple to install
TECHNICAL RESOURCES
Quadruple Wide Arch Style 1104
General Rubber's Styles 1104 and 1204, quadruple (4) wide arch rubber expansion joints have quadruple the all directional movement capabilities with one-quarter the spring rates of our single arch design. Additionally, they are designed to reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Quadruple the movement with one-quarter the spring rate
- Standard or custom face-to-face dimensions
- Available in custom offset arrangements and sizes not shown
- Virtually eliminates sediment buildup
- Higher pressure rating than conventional expansion joints
- Style 1204 designates full vacuum rating (30" Hg) in all sizes
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- Filled arch design available
- High strength and simple to install
TECHNICAL RESOURCES
Economical Single Wide Arch Style 1015
General Rubber's Style 1015 rubber expansion joints represent our most cost-effective full pressure single wide arch design. An optional Teflon liner is available for optimal temperature and chemical resistance. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Economical fully molded construction
- Virtually eliminates sediment buildup
- Higher pressure rating than conventional expansion joints
- Full vacuum rating (30" Hg) in all sizes
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- Filled arch design available
- High strength and simple to install
- Large inventory means quick shipments
TECHNICAL RESOURCES
Rubber Slip-On Sleeve Styles 8101, 8102, 8103
General Rubber's Style 8101 single (1) arch sleeve type rubber expansion joints are designed with lower spring rates for reduced reaction forces and greater movement capabilities within a compact body. This optimally designed slip-on and lightweight construction represents the most cost-effective arrangement for low pressure applications. Mating flanges and hardware are not required, adding to the cost-effectiveness of this arrangement. The construction includes a high-grade leak-proof tube, a seamless cover, multiple layers of high-strength tire cord and stainless steel screw clamps. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses.
General Rubber's Style 8102 double (2) arch sleeve type rubber expansion joints have twice the all-directional movement capabilities with half the spring rates of our single arch design.
General Rubber's Style 8103 triple (3) arch sleeve type rubber expansion joints have triple the all-directional movement capabilities with one-third the spring rates of our single arch design.
Features
- Versatile hand-built construction
- Available in split-wrap or custom offset arrangements and sizes not shown
- Virtually eliminates sediment buildup
- Economical slip-on design eliminates the need for mating flanges and hardware
- Higher pressure rating than conventional expansion joints
- Extremely lightweight and flexible
- 250°F continuous service standard (400°F available)
- Reducers and offset styles available
- Filled arch design available
- High strength and simple to install
TECHNICAL RESOURCES
Concentric Reducing Style 1101CR
General Rubber's Styles 1101CR and 1201CR concentric reducing rubber expansion joints are an economical way to combine a reducing pipe fitting with an expansion joint. The two different flanged diameters have a common centerline. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Virtually eliminates sediment buildup
- An economic and space saving way to combine a reducing pipe fitting with an expansion joint
- Available in split-wrap or custom offset arrangements and sizes not shown
- Standard or custom face-to-face dimensions
- Available in custom offset arrangements and sizes not shown
- Integral flange design, no gaskets required
- Filled arch design available
- 250°F continuous service standard (400°F available)
- Higher pressure rating than conventional expansion joints
- Style 1201CR designates full vacuum rating (30" Hg) in all sizes
- Hot dip galvanized retaining rings standard
- High strength and simple to install
TECHNICAL RESOURCES
Eccentric Reducing Style 1101ER
General Rubber's Styles 1101ER and 1201ER eccentric reducing rubber expansion joints are an economical way to combine a reducing pipe fitting with an expansion joint. The two different flanged diameters have an offset centerline. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Virtually eliminates sediment buildup
- An economic and space saving way to combine a reducing pipe fitting with an expansion joint
- Available in split-wrap or custom offset arrangements and sizes not shown
- Standard or custom face-to-face dimensions
- Available in custom offset arrangements and sizes not shown
- Integral flange design, no gaskets required
- Filled arch design available
- 250°F continuous service standard (400°F available)
- Higher pressure rating than conventional expansion joints
- Style 1201ER designates full vacuum rating (30" Hg) in all sizes
- Hot dip galvanized retaining rings standard
- High strength and simple to install
TECHNICAL RESOURCES
Lateral / Angular Offset 1101LO / 1101AO
General Rubber's Styles 1101AO and 1201AO rubber expansion joints are designed with built-in angular offsets to accommodate non-standard field conditions. They provide ease of installation without compromising any performance capabilities. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
General Rubber's Styles 1101LO and 1201LO rubber expansion joints are designed with built-in lateral offsets to accommodate non-standard field conditions.
Features
- Versatile hand-built construction
- Virtually eliminates sediment buildup
- An economic and space saving way to combine a reducing pipe fitting with an expansion joint
- Available in split-wrap or custom offset arrangements and sizes not shown
- Standard or custom face-to-face dimensions
- Available in multiple arch arrangements and sizes not shown
- Integral flange design, no gaskets required
- Filled arch design available
- 250°F continuous service standard (400°F available)
- Higher pressure rating than conventional expansion joints
- Styles 1201LO and 1201AO designate full vacuum rating (30" Hg) in all sizes
- Hot dip galvanized retaining rings standard
- High strength and simple to install
TECHNICAL RESOURCES
Lightweight Style 1101LW
General Rubber's Style 1101LW lightweight rubber expansion joints are designed with lower spring rates for reduced reaction forces and greater movement capabilities within a compact body. This optimally designed lightweight construction represents the most cost-effective arrangement for low pressure applications. The construction includes full rubber flanges, a high-grade leak-proof tube, a seamless cover, multiple layers of high-strength tire cord and hot dip galvanized steel retaining rings. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses.
Features
- Ideal flexible connector for fans, blowers and other industrial OEM Equipment
- High strength and simple to install
- An economic and space saving way to combine a reducing pipe fitting with an expansion joint
- Integral flange design, no gaskets required
- Hot dip galvanized retaining rings standard
- 25 PSIG with 6" Hg standard design
- 250°F continuous service standard (400°F available)
- Virtually eliminates sediment buildup
- Available in multiple arch or offset arrangements and sizes not shown
- Standard or custom face-to-face dimensions
- Versatile hand-built construction
- Extremely flexible design with minimum stiffness and deflection forces
TECHNICAL RESOURCES
High Pressure Style 1101HP
General Rubber's Style 1101HP rubber expansion joints are designed for higher pressure applications. The standard spool type body is reinforced with additional layers of high-strength tire cord and high tensile steel reinforcements. The construction includes full rubber flanges, a high-grade leak-proof tube, a seamless cover and hot dip galvanized steel retaining rings. Additionally, they are designed to reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Standard or custom face-to-face dimensions
- Available in multiple arches or custom offset arrangements and sizes not shown
- Virtually eliminates sediment buildup
- Higher pressure rating than conventional expansion joints
- Excellent chemical and abrasion resistance
- Full vacuum rating (30" Hg) in all single arch sizes
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- Filled arch design available
- High strength and simple to install
TECHNICAL RESOURCES
High Temperature Style 1101HT
General Rubber's Style 1101HT rubber expansion joints are designed for higher temperature applications. The spool type body is constructed with a high temperature resistant EPDM or Viton® leak-proof tube and seamless cover with Kevlar® high temperature and high-strength tire cord reinforcement. The construction includes full rubber flanges, high tensile steel reinforcement and hot dip galvanized steel retaining rings. Additionally, they are designed to reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Standard or custom face-to-face dimensions
- Available in multiple arches or custom offset arrangements and sizes not shown
- Virtually eliminates sediment buildup
- Higher pressure rating than conventional expansion joints
- 350°F continuous service with EPDM / Kevlar®
- 400°F continuous service with Viton® / Kevlar®
- Excellent chemical and abrasion resistance
- Full vacuum rating (30" Hg) in all single arch sizes
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- Filled arch design available
- High strength and simple to install
TECHNICAL RESOURCES
Rubber Flanged Pipe Style 1100
General Rubber's Style 1100 rubber flanged pipes are designed to absorb all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for minor misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its archless spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. This construction, as a standalone expansion joint, represents the most cost-effective arrangement when used in rigid piping systems with main anchors (MA) and numerous guides at specific spacing. Control units can be externally or internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Standard or custom face-to-face dimensions
- Available in custom offset arrangements and sizes not shown
- 15'' Hg standard design - full vacuum (30'' Hg) available
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- High strength and simple to install
TECHNICAL RESOURCES
Rubber Flanged Fittings Styles 1100EF, 1100TF, 1100YF
General Rubber's Styles 1100EF, 1100TF and 1100YF rubber flanged fittings are an economical way of combining an elbow, tee, or wye pipe fitting with an expansion joint. Additionally, they are designed to reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings.
Features
- Versatile hand-built construction
- Standard or custom face-to-face dimensions
- Available in custom offset arrangements and sizes not shown
- Higher pressure rating than conventional expansion joints
- 15'' Hg standard design - full vacuum (30'' Hg) available
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- High strength and simple to install
TECHNICAL RESOURCES
Control Units, Limit Rods and Tie Rods
Control units can be designed as limit rods or tie rods depending on the application. Their designs are based on the calculated thrust force of the rubber expansion joint at the specified pressure and can be attached to the external or internal hardware of the expansion joint. The arrangement can also include a combination of rubber grommets, flat or spherical washers, as well as internal limits for specific applications. The standard gusset plates are high-grade carbon steel with a hot dip galvanized finish, and the standard rods are high tensile steel with a hot dip galvanized finish. Stainless steel control units are also readily available, as are those made of alternative materials including, but not limited to, aluminum, bronze, and Teflon-coated hardware.
Limit Rods are control units designed with a gap to allow the rubber expansion joint's movement range (axial, angular, lateral, and torsional) during normal operation. In the event of main anchor failure, the limits rods will engage and function as a secondary restraint. This will prevent the rubber expansion joints from over-extension or over-compression, by restraining the full pressure thrust loads.
Tie Rods are control units designed to continuously restrain expansion joints axially while also restricting their other movements (angular, lateral and torsional) during normal operation. The tie rods will act as the primary restraint by continuously restraining the full pressure thrust loads.
General Rubber is proud to detail many of these styles on the linked control unit data sheet as well as illustrating them on the expansion joint data sheets.
Features
- Protects expansion joints by restraining pressure thrust forces
- High tensile galvanized steel rods standard, stainless steel and other materials available
- Galvanized gusset plates standard, stainless steel and other materials available
- Rubber grommets isolate vibration and are standard on sizes 1" to 12" diameter
- Internal nuts or compression sleeves to prevent over-compression are available
- Spherical washers prevent binding while minimizing lateral forces
- Double nuts are used to lock limit points and allow for field adjustment
- Custom restraints available including universal, hinge and gimbal arrangements
TECHNICAL RESOURCES
Advanced Restrained Expansion Joints Styles
Dismantling Style 5100D
General Rubber's Style 5100D dismantling rubber expansion joint is designed for self-retraction to facilitate access to piping and equipment as well as for unmatched ease of installation and subsequent removal. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. Control units are typically internally attached and used as limit rods for secondary restraint or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Standard or custom face-to-face dimensions
- Available in multiple arches or custom offset arrangements and sizes not shown
- Virtually eliminates sediment buildup
- Higher pressure rating than conventional expansion joints
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Hot dip galvanized gusset plates and high tensile galvanized steel rods standard
- Integral flange design, no gaskets required
- Filled arch design available
- High strength and simple to install
TECHNICAL RESOURCES
Universal Style 5100U
General Rubber's Style 5100U universal rubber expansion joints feature two resilient arch sections separated by a straight section to facilitate greater lateral movement capability. This single unit arrangement represents an effective solution for absorbing axial thermal movements from adjacent pipe runs. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. Their control units are externally or internally attached and used as limit rods for secondary restraint in a properly anchored piping system or as tie rods when the support structure or adjacent equipment have load limitations.
Features
- Versatile hand-built construction
- Standard or custom face-to-face dimensions
- Available in multiple arches or custom offset arrangements and sizes not shown
- Most economical restrained design
- Higher pressure rating than conventional expansion joints
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Hot dip galvanized gusset plates and high tensile galvanized steel rods standard
- Integral flange design, no gaskets required
- Most economical restrained design
- High strength and simple to install
TECHNICAL RESOURCES
Hinge Style 5100H
General Rubber's Style 5100H hinge rubber expansion joint is designed to facilitate and isolate angular rotation in one plane. The arrangement consists of a pair of hinge plates connected with pins and attached to the external or internal hardware of the expansion joint. The hinge assembly must be designed for the internal pressure thrust forces of the system. They can be used in sets of two or three to absorb large lateral movements in a single plane. This optimally designed arrangement is an effective solution for absorbing large axial thermal movements from an adjacent pipe run. Its spool type body is constructed with full rubber flanges, a high-grade leak proof-tube, multiple layers of high-strength tire cord, high tensile steel reinforcement and a seamless cover. They are commonly used when the support structure or adjacent equipment have load limitations. The economic benefits of this arrangement include a smaller system footprint with far fewer anchors and guides.
Features
- Versatile hand-built construction
- Optional slotted hardware for greater movement capabilities
- Effective restrained design
- Exceptional lateral movement capabilities in sets of two or three
- Available in multiple arch arrangements and sizes not shown
- Higher pressure rating than conventional expansion joints
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- Hot dip galvanized hinge plates standard
- High strength and simple to install
TECHNICAL RESOURCES
Gimbal Style 5100G
General Rubber's Style 5100G gimbal rubber expansion joint is designed to facilitate and isolate angular rotation in two planes. The arrangement consists of two pairs of hinge plates connected with pins to a common gimbal ring and attached to the external or internal hardware of the expansion joint. The gimbal assembly must be designed for the internal pressure thrust forces of the system. They can be used in sets of two, or sets of two with a single hinge design to absorb large lateral movements in multiple planes. This optimally designed arrangement represents an effective solution for absorbing large axial thermal movements from adjacent pipe runs. Its spool type body is constructed with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement and a seamless cover. They are commonly used when the support structure or adjacent equipment have load limitations. The economic benefits of this arrangement include a smaller system footprint with far fewer anchors and guides.
Features
- Versatile hand-built construction
- Optional slotted hardware for greater movement capabilities
- Effective restrained design
- Exceptional lateral movement capabilities in sets of two or two with a single hinge
- Available in multiple arch arrangements and sizes not shown
- Higher pressure rating than conventional expansion joints
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Integral flange design, no gaskets required
- Hot dip galvanized hinge plates standard
- High strength and simple to install
TECHNICAL RESOURCES
In-Line Pressure Balanced Style 5100P
General Rubber's Style 5100P in-line pressure balanced rubber expansion joints are the only effective solution for directly absorbing large axial thermal movements while continuously self-restraining the pressure thrust forces. This arrangement consists of tie devices inter-connecting its main joint sections to its opposing balancing joint section and is commonly used when the support structure or adjacent equipment have load limitations. The body is a one-piece rubber construction with full rubber flanges, a high-grade leak-proof tube, multiple layers of high-strength tire cord, high tensile steel reinforcement, a seamless cover and hot dip galvanized steel retaining rings. Additionally, they are designed to absorb all-directional movement, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. The economic benefits of using pressure balanced designs include a smaller system footprint as well as far fewer guides, anchors and supports.
Features
- Versatile hand-built construction
- Excellent all-directional movement capabilities
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Hot dip galvanized gusset plates and high tensile galvanized steel rods standard
- Integral flange design, no gaskets required
- High strength and simple to install
TECHNICAL RESOURCES
Elbow Pressure Balanced Style 5100E
General Rubber's Style 5100E elbow pressure balanced rubber expansion joint is designed to absorb all-directional movement while continuously self-restraining the pressure thrust forces. This arrangement consists of tie devices inter-connecting its main joint section to its opposing balancing joint section and is commonly used when the support structure or adjacent equipment have load limitations. The pair of spool type bodies are constructed with full rubber flanges, high-grade leak-proof tubes, multiple layers of high-strength tire cord, high tensile steel reinforcements, seamless covers and hot dip galvanized steel retaining rings. Additionally, they are designed to reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses. The economic benefits of using pressure balanced designs include a smaller system footprint as well as far fewer guides, anchors and supports.
Features
- Versatile hand-built construction
- Excellent all-directional movement capabilities
- 250°F continuous service standard (400°F available)
- Hot dip galvanized retaining rings standard
- Hot dip galvanized gusset plates and high tensile galvanized steel rods standard
- Integral flange design, no gaskets required
- High strength and simple to install
TECHNICAL RESOURCES
Ducting Expansion Joints Styles
Rubber Slip-On Sleeve Style 8101LW, 8100LW, 1091
General Rubber's Styles 8100LW, 8101LW and 1091 rubber slip-on sleeve type rubber expansion joints are designed with lower spring rates for reduced reaction forces and greater movement capabilities within a compact body. This optimally designed slip-on and lightweight construction represents the most cost-effective arrangement for low pressure applications. Mating flanges and hardware are not required, adding to the cost-effectiveness of this arrangement. The construction includes a high-grade leak-proof tube, a seamless cover, multiple layers of high-strength tire cord and stainless steel screw clamps. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to piping and equipment and relieve pipe and anchor stresses.
General Rubber's no-arch Style 8100LW slip-on sleeve is designed with minimal reinforcement for ducting applications operating within ± 5 PSIG.
General Rubber's single arch Style 8101LW slip-on sleeve has exceptional all-directional movement and is designed with minimal reinforcement for ducting applications operating within ± 5 PSIG. Additionally, they are available in multiple arches for increased movements and decreased spring rates as well as custom offsets and reducing arrangements.
General Rubber's fully molded Style 1091 has unique beaded ends to prevent the sleeve from being pulled out from under the clamps, making this design ideal for vibrating bin activators as well as other industrial OEM equipment.
Features
- Versatile hand-built construction
- 250°F continuous service standard (400°F available)
- Available in split-wrap
- Available in multiple arches for greater movements and reduced spring rates
- Available in custom offsets and overall length (OAL) dimensions as well as reducing arrangements
- Economical slip-on design eliminates the need for mating flanges and hardware
- Extremely lightweight and flexible
TECHNICAL RESOURCES
Rubber Flanged Standard Style 1092 and 1097
General Rubber's Styles 1092 and 1097 rubber flanged standard ducting expansion joints are designed with lower spring rates for reduced reaction forces and greater movement capabilities within a compact body. This lightweight construction is optimally designed with external or internal molded flanges and represents the most cost-effective arrangement for low pressure flanged ducting applications. The construction includes a high-grade leak-proof tube, a seamless cover, multiple layers of high-strength tire cord and steel retaining rings. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to ducting and equipment and relieve duct and anchor stresses.
General Rubber's Style 1092 offers improved performance capabilities and easier installation based on its U-shaped and performance based molded belt construction. Its fully molded flanges minimize the stresses along the inside edge and are available in standard face-to-face dimensions including 3", 4", 6", 8", 9" and 12".
General Rubber's Style 1097 offers custom face-to-face dimensions based on its flat and versatile molded belt construction.
Features
- 250°F continuous service standard (400°F available)
- ± 3 PSI continuous service
- Extremely lightweight and flexible
- Reducers and offset styles available
- Zero porosity in wet or dry service
- Economical, all-molded construction
- Round and rectangular designs in all styles and sizes
- Exceptional all-directional movement capability
- Absorbs system noise, vibration and shock
- Compensates for minor misalignment and offsets
- Integrally flanged design
- Low stiffness and deflection forces
- Carbon steel, stainless steel, or hot dip galvanized retaining rings available
- No gaskets required
- Excellent chemical and abrasion resistance
- Available with external or internal flanges
TECHNICAL RESOURCES
Rubber Flanged Versatile Style 9100 and 9101
General Rubber's Style 9101 completely versatile ducting rubber expansion joint is designed with an integral arch in a hand wrapped construction. This results in lower spring rates for reduced reaction forces and greater movement capabilities within a compact body. This optimally designed lightweight construction represents the most versatile arrangement for even the most demanding ducting applications. The versatile hand-built construction includes full rubber flanges, a high-grade leak-proof tube, a seamless cover, multiple layers of high-strength tire cord and steel retaining rings. Additionally, they are available in multiple arches for increased movements and decreased spring rates as well as custom offsets and reducing arrangements. They are also designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to ducting and equipment and relieve duct and anchor stresses.
Features
- Versatile hand-built construction
- 250°F continuous service standard (400°F available)
- ± 3 PSI continuous service standard (25 PSI available)
- Round or rectangular designs in all sizes
- Available in multiple arches for greater movements and reduced spring rates
- Available in custom offsets and face-to-face dimensions as well as reducing arrangements
- Simple to install, lightweight and high-strength
- Carbon steel, stainless steel, or hot dip galvanized backup rings
- Zero porosity in wet or dry service
- No gaskets required
- Excellent chemical and abrasion resistance
TECHNICAL RESOURCES
PTFE Single Layer Style 1093 and 1094 and 1095
General Rubber's Styles 1093, 1094 and 1095 PTFE single layer flanged ducting expansion joints are designed with lower spring rates for reduced reaction forces and greater movement capabilities within a compact body. This lightweight construction is optimally designed with external or internal laminated flanges and represents the most cost-effective arrangement for low pressure flanged ducting applications. The construction includes a PTFE fluoropolymer laminated flexible element and steel retaining rings. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, compensate for misalignments, provide access to ducting and equipment and relieve duct and anchor stresses.
General Rubber's Style 1093 offers up to 600°F with ± 3 PSI continuous service and zero porosity in wet and dry systems. The flexible element is constructed with PTFE fluoropolymer coated high tensile fiberglass reinforcement and a 9 Mil thick laminated PTFE fluoropolymer corrosion barrier.
General Rubber's Style 1094 offers up to 1,000°F and ± 3 PSI continuous service. The flexible element is constructed with PTFE fluoropolymer coated high tensile fiberglass reinforcement, laminated PTFE fluoropolymer corrosion barrier and a laminated woven or needle mat fiberglass insulation layer.
General Rubber's Style 1095 offers up to 500°F with ± 3 PSI continuous service, zero porosity in wet and dry systems and a cycle life in the millions. The flexible element is constructed of a solid 30 Mil thick PTFE fluoropolymer layer and is available in thicknesses up to 60 Mil; offering the ultimate chemical resistance with no fiberglass component to fatigue.
Features
- Round and rectangular designs in all styles
- Laminated PTFE fluoropolymer corrosion barrier
- Reducers and offset styles available
- Exceptional all-directional movement capability
- Absorbs system noise, vibration and shock
- Compensates for minor misalignment and offset
- Available with external or internal flanges
- Low stiffness and deflection forces
- Simple to install, lightweight and high strength
- Provides easy access to ducting and equipment
- Carbon steel, stainless steel, or hot dip galvanized backup rings available for easy bolting to mating flanges
- Superior chemical resistance
- Heat form and sealed to any size and arrangement
TECHNICAL RESOURCES
PTFE Composite Style 1096
General Rubber's Style 1096 PTFE composite ducting expansion joint is designed for flue gas continuous service up to 1200°F. This construction is optimally designed with a PTFE fluoropolymer composite flexible element, cavity pillows, steel frames and flow liners as the support structures and applications require. Composite layering includes a heat and abrasion resistant high tensile fiberglass reinforcement (gas side), insulation matting, 9 Mil thick PTFE corrosion barrier (dew point sensitive), insulation matting, high tensile fiberglass reinforcement and an outer layer of PTFE fluoropolymer coated high tensile fiberglass. Additionally, they are designed to absorb large all-directional movements, reduce noise and vibration, compensate for misalignments, provide access to ducting and equipment and relieve duct and anchor stresses.
Features
- Flue gas service up to 1200°F continuous service
- PTFE Fluoropolymer corrosion barrier standard for superior chemical resistance
- Round and rectangular frames available in all sizes
- Available with single or double flow liners
- Easy to field splice or repair by heat sealing
- Exceptional all-directional movement capability
- Absorbs system noise, vibration and shock
- Compensates for minor misalignment and offset
- Field surveys and evaluations available
TECHNICAL RESOURCES
Expansion Joints
Garlock Expansion Joints offer superior performance, reliability, and service life, resulting in improved plant safety and increased mechanical integrity of equipment. As specifically engineered products that are inserted in a rigid piping system, Garlock Rubber Expansion Joints will:
- Absorb movement
- Improve thermal stability
- Relieve system strain due to thermal change, load stress, pumping surges, wear of settling
- Reduce mechanical noise
- Compensate for misalignment
- Eliminate electrolysis between dissimilar metals
All of our expansion joints carry safety ratings that exceed product specifications in areas such as pressure and movement. Non-metallic expansion joints and flexible couplings are ideally suited for a wide variety of industries.
Expansion Joints for Pipes
Expansion joints for piping systems are flexible connectors, made out of PTFE, natural or synthetic elastomers, with combinations of rubber, fabric and metal reinforcement. Expansion joints installed into piping systems will help solve problems such as:
- Stresses - expansion joints absorb movement due to thermal expansion and contraction of pipes, wear, load stresses and settling of supports and foundations
- Misalignment - custom expansion joints can be manufactured with offsets to account for installation errors in pipe alignment, or for movement and settling over time
- Abrasion - with proprietary elastomers such as ABRA-LINE, abrasion can be significantly reduced compared to other rubber or metallic connectors
- Vibration - rubber expansion joints significantly reduce vibration when installed in proper locations and are not subject to metal fatigue failure
- Noise - transmission of sound is reduced as the expansion joint acts as a dampener and absorbs the noise levels
- Shock - effects of pressure surges, water hammer, or pump cavitation are resisted
- Corrosion - no metal to metal contact eliminating electrolysis between dissimilar metals
- Space - greatly reduced space required compared to expansion bends or loops
To select the proper piping expansion joint, it is critical to understand the media compatibility with the materials selected, full temperature, pressure and vacuum ranges, movements required, and dimensions between pipe flanges. With this information, Garlock application engineers can assist in determining the ideal expansion joint for any application.
For critical chemical applications, only Garlock offers a mechanically bonded GUARDIAN FEP Liner, eliminating the common failures of delamination in PTFE lined expansion joints. Available for Style 204 and Style 206 designs.
For abrasive applications, only Garlock offers expansion joints with an ABRA-LINE tube, offering superior abrasion resistance compared to other elastomers. Available for Style 204, Style 206, and Style 7250 designs.
For other applications, Garlock offers a wide variety of elastomers to suit the demands required and can be configured into most Style 204, Style 206, and Style 7250 designs.
Advanced Restrained Expansion Joints Styles
Style 204 Narrow Arch Expansion Joint Spool-type Rubber Expansion Joints
The Style 204 family of spool-type expansion joints are manufactured with the industry standard narrow arch design. This style is intended to be used in dynamic conditions where both pressure and vacuum concerns are present.
Features And Benefits
- Fully laboratory and field tested for long life and exceptional reliability
- High pressure and vacuum resistance offer increased safety and ensure suitability for a wide range of applications
- Single and multi-arch designs are available for a range of movement capabilities
- Concentric and eccentric reducing configurations can be provided to join piping of unequal diameters
- Available in a variety of elastomers and fabric combinations to meet the varied demands of temperature, pressure, and media
Specifications
| Temperature ºF (ºC) | > Max temperature rating is based on the lowest temperature of the material selected |
|---|---|
| Size: | > Min. Inner Diameter: 0.5 in / 13 mm |
| > Max. Inner Diameter: 120 in / 3000 mm | |
| Vacuum Rating | 29.9 In. Hg (750mm Hg.) |
| > Full vacuum rating for all sizes and face to face | |
| > Style 204EVS available for continuous full vacuum service |
Pressure and Vacuum Rating:
| PIPE I.D | 204 | 204HP | 204EPS | 204MAX | |||||
|---|---|---|---|---|---|---|---|---|---|
| Inch | mm | psi | bar | psi | bar | psi | bar | psi | bar |
| 1/2-4 | 13-100 | 165 | 11.4 | 200 | 13.8 | 250 | 17.2 | Design as
Needed |
|
| 5-12 | 125-300 | 140 | 9.7 | 190 | 13.1 | 250 | 17.2 | ||
| 14 | 350 | 85 | 5.9 | 130 | 9 | 150 | 10.3 | ||
| 16-20 | 400-500 | 65 | 4.5 | 12 | 110 | 7.6 | 150 | ||
| 22-24 | 550-600 | 65 | 4.5 | 100 | 6.9 | 150 | 10.3 | ||
| 26-40 | 650-1,000 | 55 | 3.8 | 90 | 6.2 | 100 | 6.9 | ||
| 42-66 | 1,050-1,650 | 55 | 3.8 | 80 | 5.5 | 100 | 6.9 | ||
| 68-96 | 1,700-2,400 | 45 | 3.1 | 70 | 4.8 | 100 | 6.9 | ||
| 98-108 | 2,450-2,700 | 40 | 2.8 | 60 | 4.1 | 80 | 5.5 | ||
| 110-120 | 2,750-3,000 | 30 | 2.1 | 50 | 3.4 | 80 | 5.5 | ||
Certifications
- Canadian Registration Number (CRN) - All Provinces - 204HP (1/2" - 96" ID)
- 10CFR50 Appendix B - 204, 204HP, 204EPS
- ABS Type Approval - 204HP (1/2" - 96" ID)
- ASTM F-1123 Compliant - 204HP, 204MAX on request
Applications
- Rigid piping systems
- Compensate for axial, lateral, torsional, and angular movement
- Compensate for misalignment
Liner Materials
- ABRA-LINE™: +180°F (+80°C)
- ABRA-SHIELD®: +300°F (+150°C)
- Natural Rubber: +180°F (+80°C)
- GUARDIAN® FEP: +400°F (+205°C)
- FKM (Fluoroelastomer): +400°F (+205°C)
- CSM: +250°F (+120°C)
- SURE-TEC™ FDA/NSF-61 EPDM +250°F (+120°C)
- EPDM/FDA EPDM: +300°F (+150°C)
- HNBR (Hydrogenated Nitrile): +300°F (+150°C)
- Nitrile/DETECTOMER® FDA Nitrile: +250°F (+120°C)
- Chlorobutyl (Standard): +250°F (+120°C)
- Neoprene/FDA Neoprene: +250°F (+120°C)
Standard Design
Tube- Chlorobutyl resists cracking due to high temperatures, weathering, oxidation, and chemicals
- Abrupt arch configuration provides maximum movement and maximum pressure and vacuum resistance
- Seamless tube creates a positive flange seal without gaskets
- Chlorobutyl/polyester construction with welded, treated metal body rings for dimensional stability
- A homogeneous layer of chlorobutyl fully extends to the outside edge of the flange
- A durable exterior coating futher protects the expansion joint from the effects of weathering and oxidation
- Multiple arch for higher movements
- Filled arch to eliminate media buildup
- Oversized arch for higher movements
- Concentric and eccentric tapers to connect piping of unequal diameter
- Custom Drilling - ANSI, DIN, AWWA, BS, JIS, and special drilling patterns available on request
- Extended face-to-face
- Accommodate misalignment: lateral, angular, and torsional offsets
EZ-FLO® Style 206 Expansion joints for general service applications
Style 206 EZ-FLO® expansion joints contain a single wide flowing arch, eliminating the need for filled arches on slurry services. Suitable for high pressure applications, their self-flushing design eliminates media buildup and reduces fluid turbulence.
Style 206 EZ-FLO® can be designed to meet the requirements of ASTM F1123 and Navy/Coast Guard Specification 46CFR56.60-25(E).
Features And Benefits
- Self-flushing design eliminates media buildup and reduces fluid turbulence
- High pressure resistance ensures longer life and reduces inventory requirements
- Lightweight design installs easily and costs less to ship
Specifications
| Temperature: | > Max temperature rating is based on tube, body and cover materials. To determine, find the minimum temperature based on materials selected. |
|---|---|
| Size: | > Min. Inner Diameter: 1 in / 25 mm |
| > Max. Inner Diameter: 120 in / 3000 mm | |
| Body Material | Max. Temp | Nylon Tire Cord (Standard): +250°F (+120°C) |
| Kevlar Tire Cord: +300°F (149°C) | |
| Vacuum Rating | 29.9 In. Hg (750mm Hg.) |
| > Full vacuum rating for all sizes and face to face | |
| > Style 204EVS available for continuous full vacuum service |
Pressure and Vacuum Rating:
| PIPE I.D | PRESSURE | VACCUM | |||
|---|---|---|---|---|---|
| Inch | mm | psi | bar | in. Hg | mm Hg |
| 2-10 | 50-250 | 250 | 17 | 26 | 650 |
| 12 | 300 | 250 | 17 | 12 | 300 |
| 14 | 350 | 130 | 9 | 12 | 300 |
| 16-20 | 400-500 | 110 | 8 | 12 | 300 |
| 22-24 | 550-600 | 100 | 7 | 12 | 300 |
| 26-40 | 650-1,000 | 90 | 6 | 12 | 300 |
| 42-66 | 1,050-1,650 | 80 | 5.5 | 12 | 300 |
| 68-96 | 1,700-2,400 | 70 | 5 | 12 | 300 |
| 98-108 | 2,450-2,700 | 60 | 4 | 12 | 300 |
| 110-120 | 2,750-3,000 | 60 | 4 | 12 | 300 |
Certifications
- ASTM F1123 Compliant
- Navy/Coast Guard Specification 46CFR56.60-25(E)
- Canadian Registration Number (CRN) -All provinces
- ABS Type Approval
- Nuclear - 10CFR50 Appendix B, 10CFR21, and NQA-1 basic
- ISO 15540 Fire Sales
Requires use of fire safe cover
Applications
- Pulp and Paper
- Steel
- Water/Waste Water
- HVAC
- Power Generation
- Chemical
- Petrochemical
- Marine
Liner Materials
- ABRA-LINE™: +180°F (+80°C)
- ABRA-SHIELD®: +300°F (+150°C)
- Natural Rubber: +180°F (+80°C)
- GUARDIAN® FEP: +400°F (+205°C)
- FKM (Fluoroelastomer): +400°F (+205°C)
- CSM: +250°F (+120°C)
- SURE-TEC™ FDA/NSF-61 EPDM +250°F (+120°C)
- EPDM/FDA EPDM: +300°F (+150°C)
- HNBR (Hydrogenated Nitrile): +300°F (+150°C)
- Nitrile/DETECTOMER® FDA Nitrile: +250°F (+120°C)
- Chlorobutyl (Standard): +250°F (+120°C)
- Neoprene/FDA Neoprene: +250°F (+120°C)
Standard Design
Tube- Standard chlorobutyl liner extends to outer edge of the flange for excellent chemical resistance. The flowing arch design adds pressure resistance and reduces product buildup. Seamless tube creates a positive flange seal without gaskets.
- Rubber impregnated tire cord and polyester cross-wrapped in bias-ply construction.
- Homogeneous layer of chlorobutyl elastomer extends to the outside edge of the flange. Coated with a weather-resistant protectant.
- Custom drilling: ANSI, DIN, AWWA, BS, JIS, and special drilling patterns available on request
- Extended Face-to-Face (pressure/vacuum ratings may be affected)
- Accomodate misalignment: lateral, angular, and torsional offsets
SURE-LINK™ PTFE Spool-Type Flexible Connectors
SURE-LINK™ PTFE Expansion Joints are available in multiple configurations commonly referred to as:
Couplings: Two convolution connectors designed for minimum movements.
- Pressure: to 178 psig (12 bar)
-
Full Vacuum: to +350°F (+180°C)
Expansion Joints: Three convolution connectors designed for easy movement and ease of system installation.
- Pressure to 132 psig (9 bar)
-
Full Vacuum to +180°F
Bellows: Four or five convolution connectors designed for maximum movements and vibration eliminations.
- Pressure to 87 psig (6 bar)
- Vacuum to 17.7 In. Hg (0.6 bar) at 32°F (0°C) to No Vacuum at 212°F (100°C)
Pressure and Vacuum Rating
Garlock PTFE expansion joints and couplings have pressure ratings high enough to handle most applications. As the pipe size gets larger, Garlock increases the bellows thickness and the strength of the reinforcing rings to compensate for the change in internal forces. This permits the same high pressure.
| Temp°F(°C) |
SURE-LINK™
2 Convolutions |
SURE-LINK™
3 Convolutions |
SURE-LINK™
4 Convolutions |
SURE-LINK™
5 Convolutions |
|---|---|---|---|---|
| Pressure
psi(bar) |
Pressure
psi(bar) |
Pressure
psi(bar) |
Pressure
psi(bar) |
|
| 50(10) | 178(12) | 132(19) | 87(6) | 87(6) |
| 100(50) | 165(11) | 120(8) | 87(6) | 87(6) |
| 150(65) | 150(10) | 103(7) | 81(5.5) | 81(5.5) |
| 200(90) | 130(9) | 90(6) | 71(5) | 71(5) |
| 250(120) | 110(8) | 75(5) | 59(4) | 59(4) |
| 300(150) | 92(6) | 60(4) | 48(4) | 48(4) |
| 350(180) | 78(5) | 50(3) | 36(2.5) | 36(2.5) |
| 400(205) | 65(4.5) | 42(3) | 28(2) | 28(2) |
| 450(230) | 60(4) | 35(2.5) | 17(1) | 17(1) |
Regional Availability Restrictions: Not available in Europe
Features and Benefits
- The convolution shape provides extra-long flex life at high temperatures
- The proprietary contour molding process ensures consistent wall thickness for improved blowout resistance
- PTFE body withstands corrosion, water, steam, and most chemicals and gases
- Preset tie rods prevent over-extension
- Available silicone-free upon request
Standard Design
Temperature: -100°F (-70°C) to 450°F (230°C)
Complete Assembly Includes:
- Fluorocarbon resin PTFE body
- Corrosion resistant plated metallic flanges
- Polyethylene-covered zinc plated restriction bolts
- Stainless steel corrosion-resistant reinforcing rings
Standard sizes from 1" (25mm) through 24" (600mm) pipe I.D.
Available with 304 or 316 stainless steel flanges and tie rods upon request.
| Nominal Pipe
Size I.D. (Inch) |
SURE-LINK™
2 Convolutions |
SURE-LINK™
3 Convolutions |
SURE-LINK™
4 Convolutions |
SURE-LINK™
5 Convolutions |
Torque Values
ft-lbs. |
|---|---|---|---|---|---|
| Install Length | Install Length | Install Length | Install Length | ||
| 1 | 1.375 | 1.750 | 2.625 | 3.125 | 15 |
| 1.25 | 2.000 | 2.625 | 3.188 | 3.750 | 15 |
| 1.5 | 1.375 | 2.000 | 3.313 | 3.938 | 15 |
| 2 | 1.563 | 2.750 | 3.375 | 4.000 | 20 |
| 2.5 | 2.250 | 3.188 | 4.000 | 4.813 | 25 |
| 3 | 2.250 | 3.625 | 4.438 | 5.375 | 30 |
| 4 | 2.625 | 3.625 | 4.625 | 5.625 | 35 |
| 5 | 3.250 | 4.000 | 4.938 | 5.938 | 40 |
| 6 | 2.750 | 4.000 | 5.125 | 6.125 | 44 |
| 8 | 4.000 | 6.000 | 5.250 | 6.313 | 50 |
| 10 | 3.063 | 4.250 | 5.375 | 6.563 | 55 |
| 12 | 3.125 | 4.313 | 5.500 | 6.688 | 60 |
| 14 | 3.563 | 4.813 | 6.063 | 7.313 | 70 |
| 16 | 3.688 | 4.938 | 6.188 | 7.438 | 75 |
| 18 | 4.125 | 5.438 | 6.750 | 8.125 | 80 |
| 20 | 4.125 | 5.438 | 6.750 | 8.125 | 85 |
| 24 | 4.125 | 5.500 | 6.813 | 8.125 | 90 |
| Nominal Pipe
Size I.D. (Inch) |
SURE-LINK™
Maximum Axial Movement, + or - |
SURE-LINK™
Maximum Lateral Deflection, + or.Nominal |
||||||
|---|---|---|---|---|---|---|---|---|
| 2 Convolutions | 3 Convolutions | 4 Convolutions | 5 Convolutions | 2 Convolutions | 3 Convolutions | 4 Convolutions | 5 Convolutions | |
| 1 (25) | 1/4 | 1/2 | 11/16 | 7/8 | 1/8 | 1/4 | 1/2 | 9/16 |
| 1.25(32) | 3/8 | 9/16 | 11/16 | 7/8 | 1/4 | 3/8 | 1/2 | 9/16 |
| 1.5 (40) | 1/4 | 1/2 | 13/16 | 1 | 1/8 | 1/4 | 9/16 | 11/16 |
| 2 (50) | 1/4 | 3/4 | 13/16 | 1 | 1/8 | 3/8 | 9/16 | 11/16 |
| 2.5 (65) | 5/16 | 3/4 | 7/8 | 1 1/16 | 1/8 | 3/8 | 5/8 | 13/16 |
| 3(80) | 3/8 | 1 | 7/8 | 1 11/16 | 3/16 | 1/2 | 5/8 | 13/16 |
| 4 (100) | 1/2 | 1 | 15/16 | 1 3/16 | 1/4 | 1/2 | 11/16 | 7/8 |
| 5 (125) | 1/2 | 1 | 1 | 1 1/4 | 1/4 | 1/2 | 11/16 | 7/8 |
| 6 (150) | 1/2 | 1 1/8 | 1 1/8 | 1 3/8 | 1/4 | 9/16 | 11/16 | 7/8 |
| 8 (200) | 1/2 | 1 1/8 | 1 3/16 | 1 1/2 | 1/4 | 9/16 | 13/16 | 1 |
| 10 (250) | 5/8 | 15/16 | 1 1/4 | 1 9/16 | 3/8 | 9/16 | 13/16 | 1 |
| 12 (300) | 5/8 | 15/16 | 1 1/4 | 1 9/16 | 3/8 | 9/16 | 13/16 | 1 |
| 14 (350) | 21/32 | 1 | 1 5/16 | 1 11/16 | 3/8 | 9/16 | 13/16 | 1 |
| 16 (400) | 21/32 | 1 | 1 5/16 | 1 11/16 | 3/8 | 9/16 | 13/16 | 1 |
| 18 (450) | 21/32 | 1 | 1 5/16 | 1 11/16 | 3/8 | 9/16 | 13/16 | 1 |
| 20 (500) | 11/16 | 1 1/16 | 1 7/16 | 1 3/4 | 13/32 | 5/8 | 7/8 | 1 1/16 |
| 24 (600) | 11/16 | 1 1/16 | 1 7/16 | 1 3/4 | 13/32 | 5/8 | 7/8 | 1 1/16 |
PTFE Control Units and Flanges
All PTFE joints and couplings are furnished with metallic flanges and tie rods/control units ready for immediate installation on the job site. Flanges in other alloys are available by special order.
- Flanges are protected to resist atmosphere corrosion and are tapped to ASME B16.5/B16.47 Series A Class 125/150 (standard).
- Control units are assembled with flanges to prevent joints from excessive axial elongation. They are designed to accept the static pressure thrust in the piping system.
- Tie rods are set at the factory at the maximum face-to-face working limits, with lock nuts as insurance against overextension of the expansion joint. The polyethylene covered tie rods eliminate metal-to-metal contact between the rods and flanges; the most frequent cause of noise transmission and electrolysis.
GARFLEX® Style 8100 General service expansion joint for high pressure applications
GARFLEX® expansion joints feature rugged yet flexible nylon tire cord reinforcement in a molded, spherical bellows design that ensures exceptional burst pressure ratings. The streamlined flowing arch design reduces turbulence and allows smooth, quiet flow without the restricted movement you'll find with a filled arch design.
Regional Availability Restrictions: Not available in Europe
Benefits
- Flowing arch design prevents sediment buildup and reduces turbulence.
- The nylon reinforcement provides the support needed for higher pressure applications without sacrificing flexibility.
- Floating flanges can be rotated to accommodate torsional misalignment.
- Can be installed against flat or raised face pipe flanges without the need for gaskets or spacers.
Specifications
TEMPERATURE / PRESSURE RATING
| TEMP. | PRESSURE CLASS | ||||
|---|---|---|---|---|---|
| 10 | 16 | ||||
| °F | °C | psi | bar | psi | bar |
| up to 122 | up to 50 | 145 | 10 | 232 | 16 |
| 123 - 158 | 50 - 70 | 116 | 8 | 174 | 12 |
| 159 - 212 | 70 - 100 | 87 | 6 | 145 | 10 |
VACUUM RATING*
| PIPE I.D. | VACUUM | ||
|---|---|---|---|
| Inch | mm | in. Hg | mm Hg |
| 1 - 2 | 25 - 50 | 29.9 | 750 |
| 2 - 1/2 | 65 | 20.7 | 525 |
| 3 | 80 | 17.7 | 450 |
| 4 | 100 | 11.8 | 300 |
| 5 - 8 | 125 - 200 | 8.9 | 225 |
| 10 | 250 | 5.9 | 150 |
| 12 | 300 | 3.0 | 75 |
| 14 - 24 | 350 - 600 | Not Recommended | |
BELLOW SIZES
| Nominal I.D.
Inch(mm) |
Nominal F-F | ||
|---|---|---|---|
| 5"(130 mm) | 6"(150 mm) | 8"(200 mm) | |
| 1 (25) | 16 | NA | NA |
| 1.25 | 16 | NA | NA |
| 1.5(40) | 16 | NA | NA |
| 2(50) | 16 | 16 | NA |
| 2.5(65) | 16 | 16 | NA |
| 3(80) | 16 | 16 | NA |
| 4(100) | 16 | 16 | NA |
| 5(125) | 16 | 16 | NA |
| 6(150) | 16 | 16 | NA |
| 8(200) | 16 | 16 | NA |
| 10(250) | 16 | NA | 10 |
| 12(300) | 16 | NA | 10 |
| 14(350) | NA | NA | 16 |
| 14(400) | NA | NA | 16 |
| 18(450) | NA | NA | 10 |
| 20(500) | NA | NA | 10 |
| 24(600) | NA | NA | 10 |
Certifications
Yellow Band - Nitrile Tube and Neo Cover:
- ABS Type Approved (2" - 16" ID)
- ISO 15540 Fire Safe (Requires use of fire safe cover)
- ASTM F-1123 Compliant
- 46CFR56 (USCG)
Standard Design
- Tube — Seamless tube creates a positive flange seal without gaskets
- Cover — The homogeneous layer of rubber can withstand the rigors of weathering and ozone.
- Flanges — Rotating metallic flanges with zinc plating for corrosion resistance.
- Multiple flange configurations available: ASME B16.5/B16.47 Series A Class 125/150 (standard), ASME B16.5/B16.47 Series A Class 250/300, EN 1092-1 PN10, EN 1092-1 PN16
Standard sizes from 1" (25mm) through 24" (600mm) pipe I.D.
Available with 304 or 316 stainless steel flanges and tie rods upon request.
Materials of Construction
- Yellow Band – Nitrile Tube with Neoprene Cover
- Red Band – EPDM Tube with EPDM Cover
Style 7250 FLEXO-MATIC®Expansion joint that conforms to U.S. Navy specifications
7250 FLEXO-MATIC® rubber connectors are composed of three basic elements: the tube, the body (carcass), and the cover. Designed to absorb noise and vibration in air-conditioning, heating, and industrial piping systems, Style 7250 FLEXO-MATIC® expansion joints accommodate a wide range of temperatures, pressures, and piping sizes.
Features And Benefits
- Eliminates noise at its source. Garlock FLEXO-MATIC® rubber connectors are designed to absorb equipment noise before it is transmitted through piping systems.
- Reduces vibration and lengthens equipment life because high-frequency vibrations are virtually eliminated.
- Expansion, contraction, and misalignment are all compensated for with FLEXO-MATIC® connectors.
- Absorbs water hammer, vibrations of the fluid itself, by FLEXO-MATIC® design.
- No electrolytic action, since there is no metal-to-metal contact between connectors and metal pipe.
Specifications
- Temperatures to 400°F / 204°C
- Pressures to 150psi
- Standard pipe sizes from 2in through 12in
Applications
- Air conditioning
- Heating
- Industrial piping
Liner Materials
- ABRA-LINE™: +180°F (+80°C)
- ABRA-SHIELD®: +300°F (+150°C)
- Natural Rubber: +180°F (+80°C)
- GUARDIAN® FEP: +400°F (+205°C)
- FKM (Fluoroelastomer): +400°F (+205°C)
- CSM: +250°F (+120°C)
- SURE-TEC™ FDA/NSF-61 EPDM +250°F (+120°C)
- EPDM/FDA EPDM: +300°F (+150°C)
- HNBR (Hydrogenated Nitrile): +300°F (+150°C)
- Nitrile/DETECTOMER® FDA Nitrile: +250°F (+120°C)
- Chlorobutyl (Standard): +250°F (+120°C)
- Neoprene/FDA Neoprene: +250°F (+120°C)
Additional Info
The construction features of the 7250 FLEXO-MATIC® is as follows:- The Tube–A protective, leakproof lining made of a synthetic rubber which may vary depending on the service. Garlock's standard tube is specially compounded to resist the hot and cold water found in air conditioning and heating systems. The seamless tube extends through the bore to the outer edge of the flange. Its purpose is to eliminate the possibility of the fluid penetrating the carcass and weakening the fabric.
- The Body or Carcass–Consists of fabric and rubber, reinforced with metal.
- A. Fabric Reinforcement – Cotton duck, Dacron®, or other suitable fabrics impregnated with an elastomer are wrapped and applied to provide the flexibility and support required between the tube and cover.
- B. Metal Reinforcement – Helical-wound steel reinforcement wire is firmly embedded in the carcass to provide resistance to both vacuum and pressure. Extra strength is provided in the critical flange corner area to provide positive flange sealing at 150psi for Style 7250.
- The Cover – A homogeneous layer of synthetic rubber to protect the carcass from corrosive attack or mechanical damage, the rugged cover withstands aging and weathering for a long, trouble-free life.
- Flanges – Garlock expansion joints are furnished with USA Standard 125/150lb. or 250lb. drilling. Navy or other special drilling and beaded flanges are also available on request.
- Steel Retaining Rings – Installed directly against the inner face of each flange, they provide a metal surface which equally distributes the bolt pressure around the flange. The bolts cannot damage the flange and yet sufficient pressure can be applied to effect a seal without using gaskets. Retaining rings are normally furnished with a corrosion-resistant coating, but galvanized or stainless steel retaining rings are also available on request.
Dacron is a registered trademark of E.I du Pont Nemours and Company.
Style 7706 S-Type Expansion joint designed specifically for submarine service
Style 7706 S-type has been developed specifically for submarine service. Other styles are available per application. Consult the factory for specific designs.
Regional Availability Restrictions: Not available in Europe
Ducting and Low Pressure Expansion Joints
Ducting and low pressure expansion joints are lightweight flexible connectors designed for gaseous media made out of natural or synthetic elastomers, with combinations of rubber and fabric reinforcement especially for scrubbers, precipitators, baghouses, and fans in air handling systems. Ducting expansion joints will help solve problems such as:
- Stresses - expansion joints absorb movement due to thermal expansion and contraction of ducting.
- Misalignment - the lightweight and highly flexible nature of the expansion joints installs easily and compensates for installation tolerances in duct alignment, or for movement and settling over time.
- Noise - transmission of sound is reduced as the expansion joint acts as a dampener and absorbs the noise levels.
- Vibration - rubber expansion joints significantly reduce vibration when installed in proper locations and are not subject to metal fatigue failure.
Similar low pressure expansion joints are often found in gravity fed applications in the connections of hoppers, silos, shaker tables, vibratory conveyors, and bowl feeders where large amounts of movement with minimal resistance is required. High quality, premium connectors in these applications help improve process efficiency by reducing material loss, foreign contamination, and replacement frequency. The flanged and sleeve connectors allow for easily installation and improve airborne and physical hazards associated with media leaking outside of these processes. Low pressure expansion joints also help solve problems such as:
- Abrasion - with proprietary elastomers such as ABRA-LINE, abrasion can be significantly reduced compared to other rubber or metallic connectors.
- Corrosion - no metal to metal contact eliminating electrolysis between dissimilar metals.
Optional metal reinforcement in Style 9394 Expansion Joints allow for a high level of flexibility and movement along with greater pressure and vacuum capabilities typically found in standard ducting expansion joints.
Style 8400 Flue Duct Expansion Joints
Style 8400 flue ducts are available in round, rectangular, or square configurations; as belt type (without flanges) or U-type (flanged); with virtually no size restrictions. Garlock also provides on-site vulcanizations for flue ducts that require splicing into position, due to obstructions or interferences that prevent continuous construction installations.
Regional Availability Restrictions: Not available in Europe
Specifications
- Max. Temperature: 400°F / 204°C
Configurations
Rectangular / Square Flue Ducts
- Stanard face-to-face dimensions: typically 6in / 152 mm, 9in / 229 mm, or 12in / 305 mm
- Contact Garlock for non-standard face-to-face dimensions and movement capabilities
Round Flue Ducts
- Supplied in any size, with or without flanges or arch
- Variety of materials available: neoprene, chlorobutyl, fluoroeslastomer, nitrile, EPDM, CSM, FDA neoprene, FDA EPDM, or natural/gum rubber
- Movement capabilities depend on expansion joint size and arch configuration
Belt-Type Flue Ducts
- Supplied in any size, without flanges, with or without an arch
- Available in the same materials as round flue ducts
- Movement capabilities depend on installation width and arch configuration
- Supplied open-ended (wraparound) or continuous to fit over ducting
Liner Materials
- ABRA-LINE™: +180°F (+80°C)
- ABRA-SHIELD®: +300°F (+150°C)
- Natural Rubber: +180°F (+80°C)
- GUARDIAN® FEP: +400°F (+205°C)
- FKM (Fluoroelastomer): +400°F (+205°C)
- CSM: +250°F (+120°C)
- SURE-TEC™ FDA/NSF-61 EPDM +250°F (+120°C)
- EPDM/FDA EPDM: +300°F (+150°C)
- HNBR (Hydrogenated Nitrile): +300°F (+150°C)
- Nitrile/DETECTOMER® FDA Nitrile: +250°F (+120°C)
- Chlorobutyl (Standard): +250°F (+120°C)
- Neoprene/FDA Neoprene: +250°F (+120°C)
Style 9394 Low Pressure Applications Rubber Expansion Joint
This multi-convoluted, lightweight expansion joint is designed for low pressure applications that require significant amounts of movement, axially and/or laterally. Its low spring rates make it ideal for air handling, load cell, bin activators, vibrating bins, silos, and pellet/dough hopper applications.
Regional Availability Restrictions: Not available in Europe
Features and Benefits
- Max. Temperature: 400°F / 204°C
- Can be custom-designed for even greater movement capability
- Choice of construction materials suitable for wide range of temperatures
- Available in flanged or sleeve type design, up to 48in / 1219 mm ID
NOTE: Flanged designs require retaining rings for an effective seal. Sleeve type requires clamps; the overall length of the expansion joint should include an additional 4in / 101.6 mm for clamping space.
Specifications
Pressure
- Without external reinforcing rings: up to 3 psi / 0.2 bar
- With external reinforcing rings: up to 15 psi / 1.0 bar
Vacuum
- Without internal reinforcing rings: up to 3 in Hg / 75 mm Hg
- With internal reinforcing rings: up to 15 in Hg / 381 mm Hg
- Contact Garlock if higher vacuum or pressure ratings are required
Applications
- Air handling
- Load cell
- Bin activators
- Vibrating bins
- Silos
- Pellet/dough hoppers
Liner Materials
- ABRA-LINE™: +180°F (+80°C)
- ABRA-SHIELD®: +300°F (+150°C)
- Natural Rubber: +180°F (+80°C)
- GUARDIAN® FEP: +400°F (+205°C)
- FKM (Fluoroelastomer): +400°F (+205°C)
- CSM: +250°F (+120°C)
- SURE-TEC™ FDA/NSF-61 EPDM +250°F (+120°C)
- EPDM/FDA EPDM: +300°F (+150°C)
- HNBR (Hydrogenated Nitrile): +300°F (+150°C)
- Nitrile/DETECTOMER® FDA Nitrile: +250°F (+120°C)
- Chlorobutyl (Standard): +250°F (+120°C)
- Neoprene/FDA Neoprene: +250°F (+120°C)
Additional Information
- 3/4in / 19 mm axial compression per convolution
- 5/8in / 16 mm axial elongation per convolution
- 5/8in / 16 mm lateral deflection per convolution
- Movements are non-concurrent. Larger convolutions are available to provide more movement. Contact Garlock if above listed movements need to be exceeded.
Style 207 Flexible U-Type rubber expansion joints
Style 207 is a U-type expansion joint constructed of specialty rubber and fabric. Available in round or rectangular configurations, it is used as a flexible connector between a turbine and condenser, or other similar applications, requiring internal flange connection.
Regional Availability Restrictions: Not available in Europe
Features and Benefits
- Lab and field tested
- Engineered to insure long life and reliable service
- Internally flanged for full vacuum and low pressure applications
Specifications
- Temperature*: to +250°F / +120°C
- Pressure: to 29.9in Hg / 15 psig / 1.0 bar
- Available in round or rectangular configurations
For recommendations for specific applications, including range of available elastomers, consult Quest.
Applications
- For connections between a turbine and condenser, or other similar applications.
Style 208 Flexible U-Type rubber expansion joints
Style 208 is a U-type expansion joint constructed of specialty rubber and fabric. Available in round or rectangular configurations, it is used as a flexible connector between a turbine and condenser, or other similar applications, requiring external flange connection.
Regional Availability Restrictions: Not available in Europe
Features and Benefits
- Lab and field tested
- Engineered to insure long life and reliable service
- Externally flanged, primarily for vacuum service
- Also recommended to reduce vibration and noise on lightweight piping, e.g. for carrying coal-laden air to pulverized coal burners
Specifications
- Temperature*: to +250°F / +120°C
- Pressure: to 29.9in Hg / 25 psig / 1.7 bar
- Available in round or rectangular configurations
For recommendations for specific applications, including range of available elastomers, consult Quest.
Applications
- For connections between a turbine and condenser, or other similar applications.
Style 8420 Split™ Split expansion joint
Style 8420 Split™ is typically used in applications where small piping limits the use of flanged connections. An example of this includes vacuum pump inlets and outlets in pulp and paper applications. It is also used as a temporary repair for piping that has cracked. It can be provided in the split design or as a sleeved product. Adhesives kits are also available for easy installation.
Regional Availability Restrictions: Not available in Europe
Features and Benefits
- Split design eliminates equipment disassembly, reducing costly downtime
- Available in EPDM, nitrile and fluoroelastomer in sizes from 2in / 5cm to 24in / 61 cm
- Can be customized for your application; contact Garlock with your specifications
Specifications
- Pipe Openings: to 6in. / 150mm
- Clamps Required: 4
- Thickness - 2in / 50.8mm to 12in / 304.8mm ID: 0.25in / 6.4mm
- Thickness - 14in / 355.6mm) to 24in / 609.6mm ID: 0.375in / 9.5mm
- Max. Pressure: to 15psi / 1bar
- Max. Vacuum: to 14in. Hg / 356 mm Hg
- Max. Temperature (Std. Adhesive): 165°F / 74°C
- Max. Temperature (VITON® Adhesive): 400°F / 204°C
- Movement: Vibration only
- Max. Lateral Misalignment: 0.5in / 12.7mm
- Joint Width: 8in / 203.2mm to 12in / 304.8mm
Applications
- All types of vacuum pumps
- Non-flanged piping
- Small, irregular openings
- Low-pressure and vacuum applications
- Vacuum pump inlets and outlets in pulp and paper applications
- Temporary repair for piping that has cracked
Additional Information
- Offered as split design or sleeved product
- Adhesives kits are also available for easy installation
- Clamps are not provided
Common Accessories for Expansion Joints
Garlock rubber expansion joint accessories include retaining rings, control units/tie rods, and metal flow liners.
Control Units / Tie Rods Control units and tie rods
Control units are recommended on most applications to prevent damage due to excessive pipe movements. They are not designed to replace pipeline anchoring. Control units consist of two or more tie rods connected between pipe flanges.
Regional Availability Restrictions: Not available in Europe
Features and Benefits
- Triangular end plates (gussets) have two holes for bolting securely to flange and one hole to accommodate the connecting tie rod. Gusset plates are cut from ASTM A36 Carbon Steel plate.
- Tie rods are cut from ASTM A193 Grade B7 threaded rod. Each rod incorporates double nuts on each end to keep the expansion joint from over-elongating due to pressure thrust forces.
- Nuts are ASTM A194 Grade 2H heavy hex nuts.
- Spherical washers are incorporated to accommodate moderate piping alignments but also assist with angular, torsional and lateral movements.
- Gusset plates are coated black with a corrosion resistant paint. This is the same coating that is applied to Garlock retaining rings.
- Tie rods and nuts are clear zinc plated according to ASTM F1941/F1941M, “Standard Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric”.
- Zinc plating offers improved corrosion resistance resulting in easier adjustments of the control units over time.
Additional Options
- When excessive axial compression is a concern, compression nuts can be incorporated to restrict movements as needed and to protect the expansion joint from damage.
- Gusset plates can be supplied galvanized according to ASTM A123.
- Control units can be fabricated from 304 or 316 Stainless Steel.
- Control units can be supplied with uncoated steel on request. (Previous standard design)
Metal Flow Liners High-velocity Applications Abrasive Materials Protection
Designed to extend service life by providing the tube protection from abrasive materials or solids, especially in high-velocity applications.
The flow liners are flanged at one end, installed at the head of the flow, and tapered to a 5° angle to allow lateral deflection.
Regional Availability Restrictions: Not available in Europe
Specifications
- Liner flange thickness: 10 gauge
- Liner body thickness: 12 gauge
Metal Retaining Rings Metal Retaining Rings
Required for use in all applications, metal retaining rings provide a metal surface to distribute bolting pressure equally, preventing flange damage during bolt tightening.
Regional Availability Restrictions: Not available in Europe
Features and Benefits
- Install against external flange surface
- Standard material: carbon steel with corrosion-resistant coating
- Galvanized or stainless steel also available
Expansion Joint Preventative Maintenance and Reliability Service
The Garlock Difference
Garlock understands the value PM has in meeting operational goals and offers programs designed to assist our clients with these needs. Unplanned downtime and its associated costs put undue stress and burden on everyone from purchasing and operations to maintenance and engineering. After all, the last call anyone wants to receive is one advising that a part failed over a weekend and flooded a critical area of the plant. This can be avoided!
Expansion Joint Inspections
As part of a preventive maintenance (PM) program, routine expansion joint inspections serve an important role in maximizing up time and efficiency. With an ongoing decline in the availability of skilled trades, maintenance technicians and reliability engineers are assuming responsibility for more equipment and larger areas of the plant. There are simply not enough hours in the day or resources at hand to perform every PM recommended to keep a facility running. Consequently, manufacturer recommended expansion joint PM can be easily overlooked or forgotten.
Unlike most system components, rubber expansion joints exhibit obvious outward signs of deterioration. This deterioration is typically due to settling, misalignment, excessive movement, chemical incompatibility, or a combination thereof. While these characteristics may be obvious during visual inspection, it can be difficult for untrained personnel to judge the severity of the deterioration.
Preventative Maintenance and Reliability (PMR) Benefits
Garlock’s engineers and specialists will perform inspections of all rubber (non-metallic) expansion joints currently installed or in inventory. As part of the service, each expansion joint you utilize will be visually inspected, evaluated, and pertinent visual and dimensional data recorded. This comprehensive service will provide the following:
- Manufacturer recommended periodic inspection
- System nomenclature and expansion joint identification information
- Recommended replacement schedule including priority ratings
This compiled data will help engineering, maintenance and purchasing personnel formulate the necessary maintenance and replacement schedules and forecast repair budgets more accurately. Our customers have found that by partnering with Garlock and implementing the PMR Service, they can realize zero unplanned downtime related to expansion joint failure. This service, and its associated options, has proven to be a tremendous benefit to our customers
PMR Service Features
Inspection
As part of the in-service portion of the inspection, we will obtain detailed measurements from existing pipe flanges to document and detect piping misalignment. Garlock currently offers three inspection levels to address your needs.
- EXPRESS: Includes a walk down and visual inspection in the desired area(s) of the plant, as well as measurement of any expansion joints showing obvious signs of deterioration. Garlock will discuss the on-site findings with your staff during the visit and provide recommendations and a priority replacement list based on the inspection findings.
- ENHANCED: Includes all Express services as well as a summary report detailing our findings and recommendations.
- EXPANSIVE: Includes all Enhanced services as well as a complete listing of all expansion joints inspected with information including condition of existing products and product recommendations.
Guaranteed Fit
Expansion joints measured by Garlock, ordered through a participating distribution partner, and installed utilizing proven installation practices as recommended by the Fluid Sealing Association are guaranteed to fit correctly. In the event of a measurement error, Garlock will expedite and replace the expansion joint free of charge.
Consolidation
As part of the Preventative Maintenance and Reliability Service, Garlock surveyors can provide recommendations aimed at cost savings and inventory consolidation by identifying common size ranges or recommending general-purpose materials of construction with the intent of reducing or eliminating costly equipment specific inventory.
Training
Garlock routinely provides Educational Training Seminars for a range of audiences including engineers, maintenance teams, and purchasing. Our most frequent requested training seminars cover topics such as expansion joint removal, visual inspections, proper bolting sequence, lifting and lugging, troubleshooting, and dimensional verification for installation and maintenance personnel. We will work with you to custom craft an agenda that meets your training needs.
Expansion Joints Materials Guide Tube and Cover Materials for Expansion Joints
The Garlock Difference
Choosing an appropriate high quality premium elastomer for the media and environmental conditions is critical for the expansion joint to properly function and achieve maximum service life.
Abrasive Applications
The Garlock Expansion Joint Family of Abrasion Resistant Products has been developed for highly abrasive applications. By design, these products are proven to reduce wear and extend service life compared to standard expansion joints. Together, ABRA-LINE®, ABRA-SHIELD®, and Natural Rubber provide superior performance and exceptional quality in Power Generation, Fertilizer, Mining, Pulp and Paper, Wastewater, Marine and other markets.
ABRA-LINE®
Developed for highly abrasive applications, our proprietary, millable urethane formula was designed to be the most abrasion resistant rubber liner available in an expansion joint. It has been proven to reduce wear and extend service life by causing even the most aggressive media to simply slide over the liner rather than dig in and remove material.
Third party testing revealed that ABRA-LINE® expansion joints last 2-3 times longer than traditional elastomers. Plus, the ABRA-LINE® expansion joints’ unique yellow color takes the guesswork out of determining if they are due for replacement. As the liner wears down, the yellow color darkens as the black backing becomes more prominent.
Temperature Range: -94°F (-70°C) to 180°F (80°C)
NOTE: Previously referred to as Style 404, 404HP, 404EPS, 404MAX, 406, 4394
NATURAL RUBBER
A common industry solution for basic abrasion resistance, natural rubber is often seen in a soft, tan, gum form. Natural Rubber from Garlock is black in color and features carbon black and other additives designed to improve its innate abrasion resistance and other, key physical properties.
Temperature Range: -75°F (-24°C) to 180°F (80°C)
ABRA-SHIELD®
Our proprietary hydrogenated nitrile butadiene rubber formula was specifically engineered for highly abrasive applications above the temperature limit of ABRA-LINE®. With over 50% better abrasion resistance than standard materials, ABRA-SHIELD® has proven high performance in diverse, aggressive applications with short or long term heat exposure up to 300°F (150°C).
Unlike natural rubber, ABRA-SHIELD® has superior resistance to attack by petroleum oils, ozone, and UV.
Temperature Range: -83°F (-64°C) to 300°F (150°C)
Chemical Applications
The Garlock family of chemically resistant products was developed with safety in mind. Our proprietary process for GUARDIAN® FEP mechanically bonded liners results in the industry’s safest sealing solution for hazardous and dangerous chemicals. With Garlock, you’ll have the peace of mind knowing that our materials are always 100% of the polymer specified. Garlock’s team of engineers formulate all the compounds used, eliminating the chance for catastrophic failures due to the presence of an unknown, incompatible polymer’s presence in a blended compound.
GUARDIAN® FEP LINER
A chemically resistant FEP liner that is mechanically bonded to the rubber expansion joint. This high-density FEP liner reduces permeation and offers optimal chemical resistance in applications up to 400°F. Only GUARDIAN® FEP Liners have no glue to be vulnerable to chemical attack. Comparable PTFE/FEP glue-in liners are highly susceptible to delamination and failure. GYLON® 3545 gaskets are also available with GUARDIAN® FEP liners to help achieve a seal with raised face flange connections, but a gasket is not required on flat face flanges.
Temperature Range: -100°F (-70°C) to 400°F (205°C)
NOTE: Available only in 204, 204HP and 206 Product Families. Only available as the tube material. Previously referred to as Styles G200, G200HP, G306
FLUOROELASTOMERS (FKM)
Commonly referred to as VITON® or 3M FLUOREL®, Garlock’s fluoroelastomer compound provides excellent chemical resistance in applications requiring the highest temperature rating available for rubber. Also considered the nearest thing to a universal elastomer, this specialty compound is also impervious to gasoline and UV/ Ozone attack. Though it is not ideal for hot water, steam, polar solvents, low molecular weight esters and ethers, Garlock offers other options with higher fluorine content for improved temperature and chemical resistance.
Temperature Range: -10°F (-23°C) to 400°F (205°C)
HYPALON (CSM)
Optimal elastomer for applications which require diluted acid and ozone resistance within a moderate temperature range. Excellent compatibility with most chemicals, ideal for cover materials where resistance to weather and ultraviolet light is critical.
Temperature Range: -30°C (-34°C) to 250°F (120°C)
EPDM
Resistance to water absorption makes this elastomer the leading tube choice for water handling applications. It’s outstanding UV/ Ozone resistance also make EPDM the first choice for cover materials in outdoor applications. In addition, EPDM also exhibits good performance in mild heat aging and acid systems.
Temperature Range: -67°F (-55°C) to 300°F (150°C)
NOTES: * VITON is a registered trademark of Chemours Company
Food and Potable Water Applications (FDA 21CFR177.2600)
At Garlock, our commitment to providing safe products for use in food applications starts by mixing FDA compliant elastomers in-house.
This allows for full control over the use of correct ingredients. Batch traceability is available and food safety is ensured with Current Good Manufacturing Practices.
DETECTOMER® FDA NITRILE (BLUE)
Avoid foreign material contamination with metal and X-Ray detectable, FDA compliant, Nitrile elastomer, tested and validated by third party laboratories. The tube is compatible for most animal fat and vegetable oil food products with good resistance to abrasion and water absorption. The blue color allows for additional contamination detection with automated vision and manual systems.
Temperature Range: -30°F (-34°C) to 250°F (120°C)
SURE-TEC™ FDA/NSF-61 EPDM (BLUE)
Assure technical compliance to the stringent requirements of both NSF/ANSI/CAN-61 for products used in potable drinking water as well as the food contact requirements of FDA 21CFR177.2600 with the industry’s safest premium grade blue EPDM rubber design. SURE-TEC supplies exceptionally good abrasion and outstanding water absorption resistance as well as good resistance to many alkaline chemical services. Recommended for aqueous (water-based) food services, but not for fatty-type foods or milk. Outstanding weather and UV resistance.
Note: NSF/ANSI/CAN-61 Compliance available only in 204, 206, and 7250 Product Families with SURE-TEC tube.
Temperature Range: -40°F (-40°C) to 250°F (120°C)
FDA EPDM (WHITE)
Premium grade white EPDM rubber with good resistance to many alkaline chemical services. Non-oil-resistant elastomer with very good abrasion and outstanding water absorption resistance. Recommended for aqueous (water-based) foods services, but not for fatty-type foods or milk. Outstanding weather and UV resistance.
Temperature Range: -67°F (-55°C) to 300°F (150°C)
FDA NEOPRENE (WHITE)
General purpose and off-white in color, FDA Neoprene is resistant to moderate chemicals, acids, oils, fats, grease, many solvents, and ozone.
Temperature Range: -25°F (-32°C) to 250°F (120°C)
General Service
CHLOROBUTYL
This unique elastomer possess a variety of important qualities that make it the expansion joint industry standard material. Chlorobutyl has exceptionally low permeability to gases, excellent vibration dampening properties, and good heat, chemical, ozone, and oxidation resistance.
Temperature Range: -40°F (-40°C) to 250°F (120°C)
NEOPRENE (CHLOROPRENE)
Commonly used as a cover material for expansion joints, neoprene possesses the fire retardant properties needed for compliance with ASTM F1123. It's a high performing solution in harsh weather conditions, low temperatures, and general outdoor service. Neoprene is also available as a tube liner; creating a solution for a range of media including chemical, oil, grease and fuel.
Temperature Range: -25°F (-32°C) to 250°F (120°C)
Reinforcing Materials
POLYESTER
Garlock features polyester fabric reinforcement in many of the expansion joint styles available. Coupled with metal body rings, the tightly woven fabric of polyester resists strand separation under pressure due to its high bidirectional strength.
Temperature Range: to +250°F (120°C)
NYLON TIRE CORD
Garlock also utilizes a high tensile strength tire cord for pressure reinforcement on a variety of styles. The biased tire cord reinforcement plies are applied to the expansion joint at a specific bias angle to obtain the best balance of pressure retention and resistance to swelling/strand separation.
Temperature Range: to +250°F (120°C)
KEVLAR® TIRE CORD
Garlock makes use of high strength KEVLAR® Tire Cord as an alternative material for elevated temperature service. Styles using KEVLAR® Tire Cord can achieve a maximum of 300°F without impacting pressure rating.
Temperature Range: to +300°F (150°C)
FIBERGLASS/KEVLAR
Fiberglass/KEVLAR is utilized in Garlock expansion joints for maximum temperature service. Designed for flue gas or exhaust systems, this fabric offers high durability and pressure retention in extreme temperature applications.
Temperature Range: to +400°F (+205°C) Reinforcing Materials
Discontinued Rubber Expansion Joints
These products are discontinued and no longer available.
Style 8400-HT Custom High-Temperature Flue Duct Expansion Joint
In typical Garlock fashion, the 8400-HT will be custom designed to meet or exceed the individual requirements of each application or system design specifications. The 8400-HT is available in a multitude of configurations and material combinations, complimenting our existing 8400 family of lower temperature products (8400-250, 8400-300, 8400-400). The 8400-HT is able to accommodate operating temperatures as low as -75°F / -60°C and up to 2200°F / 1200°C.
Features and Benefits
Specific combinations of fluorine based hydrocarbon polymers and reinforcing materials offer an unusually high resisistance to corrosive substances at high temperatures, ideal for most operating conditions in flue gas desulphurization systems (FGD).
- Very good rebound characteristics that help resist permanent deformation
- Special resistance to SO₂, H₂SO₄ and other corrosive chemical substances
- Continuous operating temperature in excess of 400°F
Applications
In addition to FGD systems, non metallic, flue duct style expansion joints are commonly used in gaseous medias such as hot air, chemical vapors, engine exhaust, etc. For example:
- Steam boiler systems
- Gas turbine exhausts
- Industrial furnace and chimney construction
- Refuse incinerators
- Ventilation and aeration systems
- HPI, CPI emissions control
- Pulp and paper industry
Style 9278 EZ-FLO® Expansion joint that conforms to U.S. Navy specifications
Style 9278 EZ-FLO® expansion joint is designed to meet the requirements of ASTM F1123, and is constructed of neoprene and polyamide. Retaining rings must be galvanized in accordance with the specification. Hydrostatic testing may be required and is performed in-house at our Palmyra, New York, USA facility.
Style 104GS
This general service expansion joint is designed to accomodate a wide variety of operating conditions across various industries. Although economically priced, the 104GS has been rigorously tested to insure that it provides the same quality and consistency that is expected from Garlock products.
Features and Benefits
- The versatility of the neoprene tube and cover makes the 104GS idealy suited for a wide range of media transfer.
- The wider, abrupt arch allows for greater movements and helps to reduce the affects of moderate sediment transfer.
- Metal reinforcement enables the expansion joint to handle 26in Hg / 660 mm Hg for all sizes.
- Available 2in / mm thru 36in / mm ID from stock, complete with galvanized carbon steel retaining rings as standard.
Specifications
- Minimum Temperature: -20°F / -29°C
- Maximum Temperature: 200°F / 93°C
- Maximum Pressure: Varies based on ID size