Hydraulic piston rod seal

F - Mech Eng,Light,Heat,Weapons – 16 – J

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F16J 9/16 (2006.01) F16J 15/32 (2006.01)

Patent

CA 1132159

B8408 HYDRAULIC PISTON ROD SEAL ABSTRACT A three-part seal to be fixed in a gland formed on the first of two mating cylindrical structures in a hydraulic apparatus. A continuous Teflon? nondeformable bearing ring is provided in the gland. The bearing ring has a first cylindrical surface for contact with the second cylindrical structure, a second cylindrical surface opposite the first surface and a conical rearward facing end surface. A continuous Teflon nondeformable backup seal ring is provided in the gland for mating with the rearward facing conical end surface of the bearing ring against its forward facing conical end surface. A continuous compressible resilient ring is provided on the side of the bearing ring opposite the second cylindrical structure for counteracting the bearing ring and the backup seal ring.

326679

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