JG Speedfit Superseal Plastic Push-Fit Pipe Inserts 15mm (50 Pack) (18100) (STS15)

The JG Speedfit Superseal 15mm Plastic Push-Fit Pipe Inserts (STS15) are designed to provide extra security and a watertight seal when connecting Speedfit fittings to plastic pipes. Manufactured by John Guest, these high-quality inserts feature twin O-rings that enhance sealing performance and prevent leaks under pressure.

Ideal for hot and cold water systems, central heating, and underfloor heating installations, the Superseal inserts maintain the pipe’s shape and integrity during installation. Supplied in a large 50-pack, they’re perfect for both professional plumbers and large-scale projects.