Thermoseal C-4201 is a compressed fiber material with good chemical and oil resistance. C-4201 is manufactured from synthetic fibers with a Nitrile binder system and is an excellent gasket material for sealing oils and solvents in high temperature applications seeing temperatures up to 450°F (230°C) and for sealing gases and steam at temperatures up to 375°F (190°C). This material is typically used as a gasket or seal for compressors, pipe flanges, manways, pumps and valves in applications that require oil and solvent resistance at elevated temperatures.
Thermoseal C-4201 is available in sheets 60" x 60" square in the following thickness: 1/64", 1/32", 3/64", 1/16", 3/32" and 1/8". We will gladly supply material in full sheets or allow Atlantic Gasket to die-cut or waterjet cut parts to your exact requirements. If needed, we can ship finished parts the same day.
Specifications
Meets ASTM F104 F712121B3E11K6M5
| Physical Properties | Test Method | Typical Valve |
|---|---|---|
| Creep Relaxation (.031") | ASTM F38B | 20% |
| Sealability (.031") | ASTM F37A | <0.5 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% 0-5% |
| Dielectric Strength | ASTM D149-95a | 14 kV/mm |
| Density | ASTM F1315 | 119 pcf (1.9 g/cc) |
| Leachable Chloride Content | FSA Method (Average) | 200 ppm |
| Color | N/A | White or Black |
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.