Piston seal and disc brake using the piston seal

Details Piston seal and disc brake using the piston seal Piston seal and disc brake using the piston seal

2007-08-14

2007-08-14

Williams, Thomas (Department: 3683)

Brakes

Wheel

Axially movable brake element or housing therefor

C277S650000

Reexamination Certificate

active

10824368

ABSTRACT:
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.

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