Each provided a gripping ring, or an ornamental ringit was difficult to know whichbolted about head high.

To join the pipe, slip the coupling nut over the new pipe, then the gripping ring and sealing cone.

Flexible pipe is joined with threaded couplings consisting of a plastic fitting, coupling nut and sealing cone and a metal gripping ring.

These are available at hardware and plumbing supply stores and consist of a plastic fitting, a coupling nut, a sealing cone and a metal gripping ring.

After cutting, slip the large coupling nut that is part of all fittings over the new pipe, followed by the metal gripping ring and plastic sealing cone, which are also standard.

Then slide the coupling nut (which will move the gripping ring with it) onto the threaded portion of the fitting and tighten it by hand, turning it clockwise, until you can no longer do so or until the nut makes a squeaking sound.