HIGH PRESSURE PROOF STEEL TUBE JOINT WITH LOW SUSCEPTIBILITY TO SEIZING

摘要

ABSTRACT OF THE DISCLOSURE: Seal for waterproof steel tube for high pressures of the type comprising at least one pair of slightly conical sealing surfaces disposed at at least one end of the male element or the female element, slightly susceptible to galling. This joint is characterized in that the first contact of the sealing zone lying at the end of an element is carried out on the corresponding sealing surface of the other element and that at this first contact the conicity of the etan-tightness surface that is located at the end of one of the seal elements is less than the conicity of the corresponding etan-tightness surface that is located on the other element of the joint, the surfaces seal being applied against one another during clamping with a sufficient contact pressure for sealing.