Thermoseal C-4401 is our most popular compressed fiber material because of its excellent chemical and sealability characteristics while being reasonably priced. C-4401 is manufactured from synthetic fibers with a Nitrile binder system and is an exceptional gasket material for sealing liquids in high temperature applications up to 750°F (399°C) and for sealing gases and steam at temperatures up to 450°F (232°C). This material is typically used as a gasket or seal for compressors, pipe flanges, manways, pumps and valves.
Thermoseal C-4401 is available in sheets 60" x 60" square, 60" wide x 120" long or 60" wide x 180" long in the following thickness: 1/64", 1/32", 3/64", 1/16", 3/32" and 1/8". If required, Atlantic Gasket will gladly die-cut or waterjet cut parts to your exact dimensions and can ship finished parts the same day if needed.
Specifications
Meets ASTM F104 F712121BE12K6M5
| Physical Properties | Test Method | Typical Valve |
|---|---|---|
| Creep Relaxation (.031") | ASTM F38B | 20% |
| Sealability (.031") | ASTM F37A | <0.25 ml/hr |
| Gas Permeability | DIN 3535/6 | <0.5 ml/min |
| Compressibility | ASTM F36J | 7% |
| Recovery (min.) | ASTM F36J | 50% |
| Weight Increase |
ASTM F 146 | 10% (max.) |
| Thickness Increase ASTM F146 After immersion in: |
ASTM Oil 1 ASTM Oil IRM903, ASTM Fuel A ASTM Fuel B |
0-5% 0-5% 0-5% 0-7% |
| Dielectric Strength | ASTM D149-95a | 14 kV/mm |
| Density | ASTM F1315 | 112 pcf (1.8 g/cc) |
| Leachable Chloride Content | FSA Method (Typical) | 100 ppm |
| Color | N/A | Green |
This information is furnished as a guide for selecting materials. Atlantic Gasket Corp. disclaims liability for results or use of this information. It is the customer’s responsibility to obtain and test samples when determining suitability of material for a particular application.
Click here to download a specification PDF document.