Patent ID: 7766339

Claim:
A seal assembly comprising: a ring body, a first sealing face of the body for sealing rite a surface of one of two members which are assembled concentrically with and rotatably relative to each other; a second sealing face of the body sealing a side wall face of an annular groove formed in the other of said two members as is located on a side of an unsealing fluid so that an annular clearance between said two members is sealed by the first and the second sealing faces; a separate portion separated at one circumferential portion of the body; a relief portion of the body having a tapered face formed throughout a circumference of said second sealing face of the body for keeping the body out of abutment against the side wall face of said annular groove on the side of said unsealing fluid; and a continuous annular sealing edge of the body formed on said second sealing face even in the a state where the a slope of the side wall face of said annular groove on the side of said unsealing fluid and a slope of the tapered face of said second sealing face are different, said continuous annular sealing edge barrier including overlapping end portions at said separate portion for sealing the side wall face of said annular groove, said continuous annular sealing edge defined by an edge portion of the body forming a circular line.