A piston seal comprising: an annular base part; an inner peripheral lip part which protrudes from an inner peripheral side of the base part, and is in sliding contact with an outer peripheral surface of a piston; an outer peripheral lip part which protrudes from an outer peripheral side of the base part, and is in contact with a peripheral groove of a cylinder main body; and a intermediate protruding part which protrudes from between the inner peripheral lip part and the outer peripheral lip part of the base part, further than the outer peripheral lip part. A linking part is provided between the inner peripheral lip part and the intermediate protruding part, is formed so as to extend in an axial direction of the piston seal, and links the inner peripheral lip part and the intermediate protruding part.
Master cylinder
2015-05-27
Patent
Elektronische Ressource
Englisch