SEAL MEMBER FOR FUEL CELL AND FUEL CELL SEAL BODY USING SAME

摘要

This seal member comprises a cross-linked body of a rubber composition and is used for sealing members configuring a fuel cell, and the rubber composition contains the (A) and (B) mentioned below. As a result, rubber elasticity is maintained without loss of rubber elasticity under extremely low temperature conditions, and when used in a fuel cell sealing body, there are superior sealing properties. (A) A rubber component comprising ethylene-propylene rubber and/or ethylene-propylene-diene rubber of which the distribution of ethylene-ethylene diads is no greater than 29 mol%. (B) A cross-linking agent comprising an organic peroxide