Patent ID: 9206900
Filing Date: 2015-12-08
Classification: F16J

Abstract:
1. A sealing assembly configured for sealing of a sliding interface of a first member and a second member wherein said first member and said second member reciprocatingly move with respect to one another, said first member having an outer circumference of a first diameter and said second member having an inner circumference of a second diameter, said sealing assembly including: a seal ring groove received on one of said first or second members, said seal ring groove including opposed first and second lands comprised of a material different from that of said first or second member within which it is located, said seal ring groove defining a circumferential base and a span of a distance L between said lands; a seal ring received in said seal ring groove, said seal ring having a span smaller than L, a free outer diameter greater than said outer diameter of said first member and an inner diameter greater than the diameter of said base of said seal ring groove where said seal ring groove is received within said first member, or a free inner diameter smaller than said outer diameter of said first member and an outer diameter smaller than said diameter of said base of said seal ring groove where said seal ring groove is received within said second member, such that a gap may be maintained between said seal ring and said base of said seal ring groove within which said seal ring is located; wherein said seal ring is free to move between said first land and said second land in response to changes in the pressure on opposed sides of said seal ring; and a shim disposed on a spacer, said shim and said spacer disposed between and defining the distance between said first and second lands, wherein said seal ring and said spacer each have opposed parallel flat surfaces; and the distances between the opposed parallel flat surfaces of said spacer and said seal ring are the same.