Threaded joint for steel pipes containing a sealing device located at the level of the threading

摘要

PCT No. PCT/FR86/00305 Sec. 371 Date May 6, 1987 Sec. 102(e) Date May 6, 1987 PCT Filed Sep. 12, 1986 PCT Pub. No. WO87/01787 PCT Pub. Date Mar. 26, 1987.A threaded joint for steel pipes useable in particular for the petroleum industry is provided. The joint is formed by threaded male and female elements wherein one part of the thread of a first element is strongly applied against the thread of the other element. One of the elements contains a groove having a length of at least one thread pitch and a depth greater than the height of the threads. A sealing device is provided in the groove consisting of a synthetic lining whose volume and shape essentially correspond to the volume and shape of the play that would exist between the threads of the elements.