Ensure secure and reliable pipe connections with the John Guest Superseal Pipe Insert. Designed for use with John Guest Speedfit fittings, these inserts provide crucial support to your pipework, maintaining its roundness and preventing deformation after cutting. The Superseal design features dual O-rings for enhanced sealing security. The first O-ring prevents water from passing between the pipe wall and the insert, while the second O-ring seals against the inside of the push-fit fitting, creating a robust multi-seal when used with standard Speedfit fittings. This insert is suitable for hot and cold water and central heating systems, offering a more rigid connection when side loads are applied. This pack contains 10 beige 15mm inserts. Summary: John Guest Superseal Pipe Insert, 15mm, Beige, Pack of 10, for Speedfit fittings, dual O-rings, supports pipe integrity, suitable for hot/cold water and central heating.