Method for manufacturing a sealing body, particularly for a pipe joint, and a sealing body produced by this method.

摘要

In the manufacture of a sealing body for a pipe joint comprising a retaining ring (2) of thermoplastic material, which is to be fastened on the end portion of a pipe part, and a sealing ring of thermoplastic material, preferably thermoplastic rubber, the mould cavity (11) for the sealing ring which is partly bounded by a portion (12) of the wall of the retaining ring (2), is sealed, at the transitions (18, 19) from said wall portion (12) to adjoining wall portions (15, 16 respectively) bounding the mould cavity (11) during injection moulding of the sealing ring. The mould cavity (11) is sealed, at the first transition (18), by an annular lip (6) on the retaining ring (2) which lies against the wall portion (15) and, at the second transition (19), by an annular ridge (10) on the retaining ring (2) which cooperates clampingly with the outer periphery (20) of a mould part (21).