Sure! The Duraplast superseal pipe insert is a product used when connecting PEX pipes to Push-fit fittings. It has two O-Rings that provide extra sealing protection. The first O-Ring is on the stem of the insert, which goes inside the pipe to prevent water from leaking between the pipe wall and the insert. The second O-Ring is at the end of the insert and creates a seal between the main pipe and the push-fit fitting. By using this insert with push-fit fittings, you get multiple seals because the fittings also have O-Ring seals. The Duraplast superseal insert is designed to fit all brands of 15mm PEX Push-fit pipe. It helps keep the pipe in shape, prevents leaks, and provides a secure connection.