Abstract: A seal assembly includes a pair of pipe couplings configured to be secured to a respective pair of pipes, each pipe coupling including an annular seal surface. An annular metal seal ring includes a pair of seal lips configured to engage a respective one of the annular seal surfaces of the pair of pipe couplings. A pair of scraper rings are secured to the pair of seal lips and include a scraper edge that extends radially beyond a distal end of the seal lips.

Abstract: The pipe ball joint includes a casing having a socket portion with a substantially spherical interior surface and a first pipe segment extending from the socket portion. The socket portion has an annular groove disposed adjacent the partially spherical interior surface. A ball pipe section includes a ball segment received in the socket portion of the casing and a second pipe segment extending from the ball segment. A seal assembly is received in the annular groove of the casing and is disposed against the ball segment of the ball pipe section. The seal assembly includes a plurality of nested seal rings that each include a concave face and a convex face.

Abstract: The pipe ball joint includes a casing having a socket portion with a substantially spherical interior surface and a first pipe segment extending from the socket portion. The socket portion has an annular groove disposed adjacent the partially spherical interior surface. A ball pipe section includes a ball segment received in the socket portion of the casing and a second pipe segment extending from the ball segment. A seal assembly is received in the annular groove of the casing and is disposed against the ball segment of the ball pipe section. The seal assembly includes a plurality of nested seal rings that each include a concave face and a convex face.

Abstract: A bonded seal includes a rigid annular carrier having an annular recess therein. An elastomer seal member is bonded within the annular recess. A thermoplastic backup ring is bonded to the elastomer seal member and disposed at an axial end of the annular recess and including elastomer material disposed between at least a portion of an outer diameter surface of the thermoplastic backup ring and the rigid annular carrier.

Abstract: A seal assembly for sealing between an inner surface of a bore and an outer surface of a mandrel includes at least one annular seal including a channel disposed in an axial end thereof with a locking shoulder facing axially away from an opening end of the channel. The annular seal has an innermost diameter that is smaller than an outer diameter of the mandrel and has an outermost diameter that is larger than an inner diameter of the bore. An annular locking ring includes a locking member at a first axial end that is received in the channel of the at least one annular seal and having a ledge portion engaged with the locking shoulder of the annular seal. The ledge portion includes at least one slot extending axially there through.