STYLE 2421
Braided Packing
Ramie Yarn, PRFE Impregnated
CONSTRUCTION
Style 2421 packing is manufactured from the finest quality ramie yarns with PTFE suspensoid in a square plait construction. An additional break-in lubricant is added to minimize shaft wear and to allow for expansion during the break-in period.
APPLICATION / SERVICE
Style 2421 is a well lubricated, medium-hard packing with very low frictional characteristics, which assures minimal shaft wear. The ramie yarn is rot and mildew resistant, making the packing ideal for marine use, handling cold water, salt water and cold oils. In the marine industry, it is recommended for sealing stern tube and rudder post stuffing boxes. This style is also used for certain pump and valve applications in the pulp and paper, water/wastewater, and mining industries.
Services Limits
| Type | Description | Value |
|---|---|---|
| Temperature Limits: |
Minimum Maximum |
- 260°F (130°C) |
| Pressure Limits: |
Rotating Reciprocating Static |
300 psi (20 bar) 300 psi (20 bar) 450 psi (30 bar) |
| Shaft Speed: | 1950 fpm (10 m/s) | |
| pH: | 5-11 |
APPROXIMATE YIELDS
| Size | Feet/Pound |
|---|---|
| 1/8" | 87 |
| 3/16" | 40 |
| 1/2" | 6.9 |
| 1/4" | 23 |
| 5/16" | 15 |
| 3/8" | 11.5 |
| 7/16" | 8.8 |
| 9/16" | 5.3 |
| 5/8" | 4.4 |
| 3/4" | 3.1 |
| 7/8" | 2.5 |
| 1" | 1.8 |
| 1-1/8" | 1.4 |
| 1-1/4" | 1.2 |
| 1-1/2" | 0.8 |