Patent ID: 6454273
Filing Date: 2002-09-24
Classification: F16J,Y10S

Abstract:
A seal structure, comprising:a sliding member; a supporting member for slidably supporting the sliding member; and a seal ring provided between the sliding member and the supporting member, the seal ring being located in a storage concavity section, the seal ring having: a heel section for supporting, at a wall surface of the storage concavity section, a pressure which acts on the seal ring, said heel section having an inner circumference, an outer circumference, and an annular supporting area between the inner circumference and the outer circumference; a lip section on which a hydraulic operating fluid acts, the lip section having an inner circumference, an outer circumference, and an annular pressure receiving area between the inner circumference and the outer circumference of the lip section, the annular pressure receiving area being smaller than the annular supporting area; and a middle section having a tapered surface which is between and connected to the lip section and the heel section.