Protection cap for piston, has fastening section, sealing unit for fastening and sealing protection cap at housing and membrane, where membrane is mounted on piston wall, particularly in groove by piston

摘要

The protection cap (1) has a fastening section (10), a sealing unit for fastening and sealing the protection cap at housing (2) and a membrane (13). The membrane is mounted on a piston wall (9), particularly in a groove (16) by a piston (7). The fastening section is provided on an inner side with a sealing element (11) radially in the direction of the piston, where the sealing element impinges the piston wall in an elastic manner.