Extruded high temperature fluoropolymer seal material

Details Extruded high temperature fluoropolymer seal material Extruded high temperature fluoropolymer seal material

C - Chemistry, Metallurgy

08

L

18/108, 400/9354

C08L 27/18 (2006.01) C08K 5/02 (2006.01) C08K 7/00 (2006.01) C09K 3/10 (2006.01) H01M 2/08 (2006.01) H01M 8/08 (2006.01)

Patent

CA 1082831

ABSTRACT OF THE DISCLOSURE An extruded seal material which 18 stable in phosphoric acid is composed of fibrillating polytetrafluoroethylene, a halogenated oil, and a filler. Preferably the oil is a fluorocarbon oil and the filler is either non-fibrillating polytetrafluoroethylene, silicon carbide or graphite, all of which are stable in phosphoric acid at temperatures up to at least 400°F. This seal material is particularly suited for use in the environment of a phosphoric acid fuel cell. -1-

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