Thermoseal C-7400 is a compressed fiber material with good chemical and oil resistance. C-7400 is manufactured from synthetic fibers with an EPDM binder system and is a moderate acid resistant gasket material for high temperature applications seeing temperatures up to 675°F (357°C) and for sealing gases and steam at temperatures up to 400°F (204°C). This material is typically used as a gasket or seal for compressors, pipe flanges, manways, pumps and valves in applications that will be exposed to light duty steam and moderate acids and caustics.
Thermoseal C-7400 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". 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 F712441B4E24K6M5
| Physical Properties | Test Method | Typical Valve |
|---|---|---|
| Creep Relaxation (.031") | ASTM F38B | 25% |
| Sealability (.031") | ASTM F37A | <0.30 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 | 15% (max.) |
| Thickness Increase ASTM F146 After immersion in: |
ASTM Oil 1 ASTM Oil IRM903, ASTM Fuel A ASTM Fuel B |
0-15% 15-30% 0-20% 5-20% |
| Dielectric Strength | ASTM D149-95a | 22 kV/mm |
| Density | ASTM F1315 | 94 pcf (1.5 g/cc) |
| Leachable Chloride Content | FSA Method (Average) | 200 ppm |
| Color | N/A | White / Grey |
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.