This is simplest style of spiral wound gasket, consisting of a circular winding without centering or inner rings. Spiral wound gaskets Style 911 are mainly used in tongue and groove or male and female. They are also used in equipment with space and weight limitations.

Style 911-T has better sealability than a coventional heat exchanger double-jacketed gasket. However, a specially machined groove with an appropiate compression stop in needed for 911-T.

• For use in a step or groove where compression guide rings are not required.
• Inner diameter of windings is reinforced with several plies of metal without filler to give greater stability.

• Style LMF - windings designed to fit for large male-female flanges
• Style LTG - windings designed to fit for large tongue and groove flanges
• Style STG - windings designed to fit for small tongue and groove flanges

Additional Information

When ordering, specify:

• Nominal pipe size
• Pressure rating
• Winding materials (304 SS is standard, filler material must be specified)
• Thickness of winding (0.125" is standard)

Style 914 spiral wound gaskets are windings in non-circular forms like oval, rectangular and square with rounded corners, diamonds, oblong or pear shaped. Style 914 gaskets are used in boiler handholes and manholes, equipment, engine head-gaskets and exhaust systems. Inner rings should also be used for many of these applications.

• Fits most standard boilers (specify maximum operating pressure when ordering).
• Available in thicknesses of 0.125" (3.175 mm), 0.175" (4.45 mm) and 0.250" (6.35 mm).

• Boiler manholes
• Tubecap assemblies

Additional Information

When ordering, specify:

• Make and model of boiler and/or equipment if available
• Gasket style and configuration
• Dimensions of gasket (thickness, flange seating width, and shape)
• Maximum operating pressure and temperature
• Type of metal and filler materials

A style 911-M gasket is a sealing winding with an inner ring. The purpose of this ring is to fill out the space between the flanges, avoiding turbulence in the flow of the fluid or as a protection against corrosion or erosion. It is also used as a compression limit when the seating stress is greater than 30,000 psi (210 MPa). Gaskets with PTFE filler have a tendency to inward buckle thus the use of an inner ring is recommended if the gasket is to be installed with a non-confined inside diameter.

Description and Applications

The construction of this gasket is circular metal winding with an outer guide ring. The sealing element is made of the specified metal and soft sealing material. The standard pipe size gaskets are made to ASME B16.20 (see also style 913M). These gaskets are used in a very wide variety of applications.

• Easy installation and removal
• Seals pressures to flange ratings, in accordance with ASME B16.5
• Suited to temperatures from cryogenic to 2000°F / 1093°C, depending on metal and filler
• Custom-tailored solutions accommodate a variety of conditions by combining various metals and filler materials
• Centering ring accurately locates the gasket on the flange face, provides additional radial strength, and acts as a compression limiter
• Spiral winding (sealing element) consists of preformed metal and soft filler material
• NOTE: Per ASME B16.20 all spiral wound gaskets for ASME B16.5 or B16.47 flanges are made with outer and inner rings (FLEXSEAL® RWI) unless specified by the customer at the time of order.

Additional Information

When ordering, specify:

• Nominal pipe size and pressure rating
• Winding material
• Filler material
• Centering ring material

Description and Applications

The 913M is the standard spiral wound gasket with an inner ring. The purpose of this ring is to fill out the space between the flanges, avoiding turbulence in the flow of the fluid or as protection against corrosion or erosion. It is also used as a compression limit. Gaskets with PTFE filler have a tendency to inward buckle thus the use of an inner ring is required by ASME B16.20. Inner rings are also required with ASME standard spiral wound gaskets with flexible graphite fillers unless the purchaser specifies otherwise and some sizes and pressure class require inner rings regardless of filler material.

• Easy installation and removal
• Seals pressures to flange ratings, in accordance with ASME B16.5 and B16.47
• Suited to temperatures from cryogenic to 2000°F / 1093°C, depending on metal and filler
• Guide ring simplifies centering of sealing element on the flange face
• Custom-tailored solutions accommodate a variety of conditions by combining various metals and filler materials
• Suitable for raised face flanges up to class 2500# flanges
• Inners rings are provided standard for ASME B16.20 unless otherwise specified by the customer
• Inner ring can help shield sealing elements from erosion caused by abrasive media

Additional Information

When ordering, specify:

• Nominal pipe size and pressure rating
• Inner ring material
• Winding material
• Filler material
• Centering ring material