SEALING MEMBER FOR MASTER CYLINDER AND MASTER CYLINDER HAVING THE SAME

摘要

PURPOSE: A sealing member for a master cylinder and a master cylinder with the same are provided to minimize meaningless backward action of a piston by rapidly connecting a communicating hole of a piston and a flow path of the oil tank. CONSTITUTION: A sealing member for a master cylinder comprises an outer blade(28b) and an inner blade(28a). The outer blade contacts a cylinder main body(20). The inner blade contacts the exterior of the piston. The inner blade comprises a sealed part(28c) and an oil flow path(28d). The sealing part is formed on the front end of the inner blade. The oil path is formed on the side facing the exterior of the piston. The oil path has a groove shape.