Honda Motor Co., Ltd.

Nok Corporation

Makoto Sanpei

Shinji Yamada

Motoyuki Sunaoka

Nobuyoshi Takamatsu

A damper having an elastic body formed from a cross-linking product of an EPDM composition, which comprises (a) 100 parts by weight of at least one kind of EPDM, whose propylene content in sum total of ethylene and propylene in the copolymerization rubber is 35-50 wt. %, the EPDM having a Mooney viscosity (ML100) of not less than 40, (b) 5-50 parts by weight of &#x3b1;-olefin oligomer, which is a polymer of &#x3b1;-olefin represented by the general formula, CHCHR, where R is an alkyl group having 3-12 carbon atoms, with a number average molecular weight Mn of 300-1,400 and (c) 1-10 parts by weight of an organic peroxide cross-linking agent.

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Tottori, Japan

Makoto Sanpei