Thermoseal C-4439 is a high performance compressed fiber gasket material with a galvanized carbon steel insert. C-4439 is manufactured using Aramid, Fiberglass and Inorganic fibers with a Nitrile binder system and is an exceptional gasket material for sealing liquids in high stress and high temperature applications up to 775°F (412°C) and for sealing steam and gases at temperatures up to 500°F (260°C). This material is typically used as a gasket or seal for compressors, pipe flanges, manways, pumps and valves.
Thermoseal C-4439 is available both 1/16" and .080" thick in sheets 60" x 60" square. If requested, Atlantic Gasket will gladly die-cut or waterjet cut parts to your exact dimensions and can ship finished parts the same day if needed.
Meets ASTM F104 F712112B3E12K6M8
|Physical Properties||Test Method||Typical Valve|
|Creep Relaxation (.031")||ASTM F38B||20%|
|Recovery (min.)||ASTM F36J||50%|
(After Immersion in Fuel B for 5 hrs. at 73 F (C))
|ASTM F 146||9% (max.)|
|Thickness Increase ASTM F146
After immersion in:
|ASTM Oil 1 5h/300°F (149°C)
ASTM Oil IRM903, 5h/300°F (149°C)
ASTM Fuel A 5h/73°F (23°C)
ASTM Fuel B 5h/73°F (23°C)
|Dielectric Strength||ASTM D149-95a||10 kV/mm|
|Density||ASTM F1315||131 pcf (2.1 g/cc)|
|Leachable Chloride Content||FSA Method (Typical)||150 ppm|
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.