Thermoseal RG-N100 is a nitrile butadiene rubber, reinforced cellulose fiber and mineral filler general purpose gasket material. Continuous roll lengths allow efficient and economical fabrication with high speed die cutting equipment. Its low density provides good conformability in sealing fuels, oils, and water in applications such as automobile water pumps, miscellaneous cover gaskets, and many small engine applications. RG-N100 is suitable for applications with intermittent operating temperatures up to 350° F (177° C).

Ref. Thickness of Measured Values

0.031" (0.8mm)

Density ASTM F1315

62 lbs/ft3 (1.00 g/cm³)

Compressibility ASTM F36J

20 - 40%

Recovery ASTM F36J

minimum 30%

Tensile Strength ASTM F152

minimum 1015 psi (7 MPa)

Fluid Resistance

After immersion in Fuel B

Weight Increase

Thickness Increase

After immersion in Oil IRM903

Weight Increase

Thickness Increase



maximum 40%

maximum 10%


maximum 50%

maximum 10%

Binder Type

Nitrile Butadiene Rubber

ASTM F104 Line Call Out


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