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摘要

PROBLEM TO BE SOLVED: To provide a crosslinked rubber composition excellent in chlorine water resistance and heat resistance, and to provide a rubber composition enabling production of the crosslinked rubber composition.;SOLUTION: The crosslinked rubber composition excellent in chlorine water resistance and heat resistance comprises an ethylene-α-olefin copolymer, a hydrophobic silica, a naphthenic oil, an epoxy-based silane coupling agent, and a crosslinking agent. The crosslinked rubber composition is obtained by crosslinking a rubber composition containing based on 100 pts.mass of the ethylene-α-olefin copolymer, 1-150 pts.mass of the hydrophobic silica, 1.0-50 pts.mass of the naphthenic oil, 0.1-20 pts.mass of the epoxy-based silane coupling agent and 0.1-10 pts.mass of the crosslinking agent.;COPYRIGHT: (C)2012,JPO&INPIT