Patent ID: 7866252

Claim:
A gasket comprising: a damping buffer for a piston, wherein the piston is chargeable with a pressure medium and movable back and forth axially in a cylinder pipe; a damping journal connected to and axially movable back and forth with the piston; a dynamic seal connected to the damping buffer and having at least one dynamically loaded sealing lip, wherein when the piston and the damping buffer are separated by greater than a predetermined distance the damping journal and sealing lip are separated and when the piston and the damping buffer are separated by less than a predetermined distance the damping journal touches the sealing lip to form a seal for damping the piston; and at least one flow-guiding connection opening connecting axial faces of the gasket; wherein the connection opening comprises at least one passage on one of the axial faces and a ring channel on the other of the axial faces and is connectable to a relief passage in the cylinder pipe in a flow-guiding manner; and wherein the axial faces are connected by a venting opening connecting the cylinder pipe and a side of a sealing edge of the dynamic seal facing the cylinder pipe in a flow-guiding manner.