Clamping system for connecting tubes, comprising a collar and a seal

A clamping system for connecting a first and a second tube whose facing ends have bearing surfaces protruding relative to the cylindrical external surface of said tubes, the system comprising a clampable collar and a seal, the collar including a belt able to cooperate with said bearing surfaces by an internal periphery delimiting a recess into which the bearing surfaces can be inserted, the seal being supported by the collar in the unclamped state of the latter and comprising an annular sealing portion, said annular portion comprising a first washer and a second washer fixed to the first washer, the first washer carrying retaining lugs which cooperate with the second washer to retain said second washer relative to the first washer wherein the first washer carries support lugs by which said first washer and said second washer are supported relative to the collar.

A clamping system for connecting a first and second tube whose facing ends have bearing surfaces protruding relative to the cylindrical external surface of said tubes, the system comprising a clampable collar and a seal, the collar including a belt able to cooperate with said bearing surfaces by an internal periphery delimiting a recess into which the bearing surfaces can be inserted, the seal being supported by the collar in the unclamped state of the latter and comprising an annular sealing portion, said annular portion comprising a first washer and second washer fixed to the first washer, the first washer carrying retaining lugs which cooperate with the second washer to retain said second washer relative to the first washer, wherein the first washer has a stamped frustoconical surface and the second washer is formed in a planar ring, deformed to match the frustoconical shape of the frustoconical surface.

A clamping system for connecting a first and second tube whose facing ends have bearing surfaces protruding relative to the cylindrical external surface of said tubes, the system comprising a clampable collar and a seal, the collar including a belt able to cooperate with said bearing surfaces by an internal periphery delimiting a recess into which the bearing surfaces can be inserted, the seal being supported by the collar in the unclamped state of the latter and comprising an annular sealing portion, said annular portion comprising a first washer and a second washer fixed to the first washer, the first washer carrying retaining lugs which cooperate with the second washer to retain said second washer relative to the first washer, wherein the first washer has an annular bulge on a first face of said first washer and the second washer is disposed against said first face.

A clamping system for connecting a first and a second tube whose facing ends have bearing surfaces protruding relative to the cylindrical external surface of said tubes, the system comprising a clampable collar and a seal the collar including a belt able to cooperate with said bearing surfaces by an internal periphery delimiting a recess into which the bearing surfaces can be inserted, the seal being supported by the collar in the unclamped state of the latter and comprising an annular sealing portion, said annular portion comprising a first washer and a second washer fixed to the first washer, the first washer carrying retaining lugs which cooperate with the second washer to retain said second washer relative to the first washer, wherein the annular sealing portion further comprises an additional second washer fixed to the first washer, the first washer being located between the second washer and the additional second washer.