The Nibco Press System copper cap features an inboard bead and EPDM O-ring. Simply applying pressure from a pressing tool tightens the O-ring onto the tube, ensuring a clean, watertight seal in seconds with no flame, solder or flux. The cap has a press connection. The fitting is used to fit over the end of pipe to seal the end. Nibco press fittings are the fastest, easiest way to join copper tubing.
May cause Cancer and/or Reproductive Harm - www.P65Warnings.ca.gov