SEAL FOR A PIPE JOINT AND SLEEVE FOR CONNECTING TWO PIPE PARTS

摘要

Annular seal for a pipe joint, intended for the joint between a socket of a pipe part and a smooth, cylindrical spigot end of a subsequent pipe part to be inserted into this socket, which seal comprises at least one sealing ring which is made of an elastic material and is deformable in the radial direction inside a chamber of the socket under the influence of the spigot end inserted in the axial direction, characterized in that the axial section of the sealing ring (4) changes in shape, location or flexibility in the circumferential direction. Preferably, the change runs in the form of waves.