the rings being integral with one of the connecting parts

Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts > with metal rings which bite into the wall of the pipe > the profile of the ring being altered > the rings being integral with one of the connecting parts

Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts (F16L17/00 takes precedence; if using bolts or equivalent connecting means F16L23/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00 ) > with metal rings which bite into the wall of the pipe > the profile of the ring being altered > the rings being integral with one of the connecting parts