Seal for pistons and piston rods of cylinder-type actuators

Details Seal for pistons and piston rods of cylinder-type actuators Seal for pistons and piston rods of cylinder-type actuators

F - Mech Eng,Light,Heat,Weapons

16

J

277/30

F16J 9/06 (2006.01)

Patent

CA 1049059

Inventor: Herbert URBASCHEK Invention: SEAL FOR PISTONS AND PISTON RODS OF CYLINDER-TYPE ACTUATORS ABSTRACT An annular seal for pistons and piston rods of cylinder- type 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 sur- face which creates dry friction and which shears and smoothens a dry lubricant coating on the sliding surface which has pre- viously been deposited there by a second, plastically yielding sealing ring received inside the same annular groove.

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