Sealing arrangement for use in e.g. hydraulic disengaging system for central release of friction clutch of motor vehicle, has sealing element arranged between inner wall of piston and cylinder wall, where wall radially encircles groove

摘要

The arrangement has a concentrically cylinder housing arranged at or around a transmission input shaft and an annular piston (2) axially movable in an annular pressure chamber of the cylinder housing when pressure is applied to a cylinder wall/guidance sleeve (1). A sealing element (7) i.e. labyrinth seal, is arranged between the inner wall of the piston and the cylinder wall/the guide sleeve. The inner wall of the piston radially encircles a groove (6). The sealing element manages radial distance (a) to a groove base of the groove.