Dichtung für einen Ringkolben einer hydraulischen Kupplungs-Ausrückvorrichtung

摘要

A disconnecting device for a motor vehicle friction clutch has a pressure housing (2) concentrically arranged to a gear box input shaft (3) and secured on a gear box housing (4). A guiding sleeve (6) radially spaced apart from the gear box input shaft (3) and from a longitudinal bore (5) in the pressure housing (2) is arranged on the pressure housing (2). A ring piston (7) which axially delimits a pressure chamber (8) slides in the guiding sleeve (6). A seal (12) with sealing lips (13, 14) spread apart in a V shape are provided to seal the ring piston (7). According to the invention, the sealing lips (13, 14) of the seal (12) have a cross-section with an asymmetrical profile.