Patent ID: 9074116
Filing Date: 2015-07-07
Classification: C08K,C09K

Abstract:
1. A sealing material obtained by vulcanization molding of a peroxide-crosslinkable fluororubber composition containing ZnO, wherein the fluororubber composition consist essentially of: (A) 100 parts by weight of a peroxide-crosslinkable fluororubber having a fluorine content of 63 to 71 wt. % and a Mooney viscosity ML1+10 (121° C.) of 20 to 100 and which contains iodine and/or bromine as a crosslinking site in the molecule; (B) 1 to 15 parts by weight of ZnO; (C) at least one of: wherein the total weight ratio of component (C) is 0.5 or more with respect to the weight of ZnO; and (D) 0.5 to 10 parts by weight of an organic peroxide.