| 摘要 |
<p>Inventor: Herbert URBASCHEK Invention: SEAL FOR PISTONS AND PISTON RODS OF CYLINDER-TYPE ACTUATORS An annular seal for pistons and piston rods of cylindertype actuators, especially hydraulic actuators, where a first sealing ring of highly elastic material is received inside an annular groove in such a way that a sharp edge of the ring exerts an elevated contact pressure against a cooperating sliding surface which creates dry friction and which shears and smoothens a dry lubricant coating on the sliding surface which has previously been deposited there by a second, plastically yielding sealing ring received inside the same annular groove.</p> |
