Piston seal and disc brake using the piston seal

A piston seal of a disc brake can stabilize the amount of rollback of a piston by reducing thermal expansion and a decrease in modulus of elasticity of the piston seal caused by an increase in temperature, thereby preventing a driver from feeling that the brake operation is unnatural. The piston sea...

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Bibliographic Details
Main Authors Noguchi, Toru, Kawata, Kazuhito, Wanibuchi, Takashi, Arita, Koichi
Format Patent
LanguageEnglish
Published 14.08.2007
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Summary:A piston seal of a disc brake can stabilize the amount of rollback of a piston by reducing thermal expansion and a decrease in modulus of elasticity of the piston seal caused by an increase in temperature, thereby preventing a driver from feeling that the brake operation is unnatural. The piston seal is formed of a rubber composition in which at least 100 parts by weight or more of carbon black is added to 100 parts by weight of ethylene propylene rubber.