Patent ID: 8158738

Claim:
An adhesive silicone rubber composition to be applied to an electrolyte membrane or an electrolyte membrane and a member disposed adjacent thereto in a polymer electrolyte fuel cell, said composition comprising (A) 100 parts by weight of an organopolysiloxane containing at least two silicon-bonded alkenyl radicals in a molecule, (B) 0.5 to 20 parts by weight of an organohydrogenpolysiloxane containing at least two silicon-bonded hydrogen atoms (or Si—H radicals) in a molecule, (C) a catalytic amount of a hydrosilylation catalyst, and (D) 0.1 to 50 parts by weight of an organosilicon compound having at least one phenyl structure, at least one alicyclic epoxy radical, and at least one silicon-bonded hydrogen atom in a molecule.