Piston - cylinder - arrangement for a disengagement system, in particular a master cylinder for a hydraulic clutch activation device.

摘要

The invention relates to a piston - cylinder - arrangement for a disengagement system, in particular a master cylinder for a hydraulic clutch actuating device, comprising a housing in which a piston is axially movably mounted and on the end face of a primary chamber, on the piston in order to seal off the pressure chamber is surrounded radially a primary sealing device is arranged, and between the longitudinal extension of the piston and the housing is a secondary chamber is formed which is sealed by means of a secondary seal. In the case of a piston - cylinder - arrangement, which requires only little installation space and nevertheless has a long useful life, the secondary seal is formed as a rolling membrane, which both on the piston as well as on the housing of which rolls.