Designed with two extra o-rings, these Superseal pipe inserts deliver an enhanced dual-action seal as well as creating a more rigid connection between a John Guest Speedfit pipe and push-fitting. Each of the inserts in this pack of 25 provides valuable extra support for your pipework, ensuring that pipe ends keep their round shape. Suitable for John Guest Speedfit pipes and fittings only Two extra o-rings provide improved sealing Creates a rigid connection and provides extra support to pipework Suitable for hot and cold water services Can be used on central heating systems Minimum operating temperature of 20C Maximum operating temperature of 105C 12 bar maximum operating pressure at minimum temperature 3 bar maximum operating pressure at maximum temperature 50-year manufacturers guarantee (T&Cs apply) Manufactured to BS EN 7291 Parts 1, 2, 3 and S WRAS-approved Standard TSM inserts must be used when connecting to a compression fitting Technical specification Brand John Guest Speedfit Colour White Material Plastic Manufacturer ID STS22 Warranty (years) 50 Diameter (mm) 22 Pack Size 2 Fitting Type Pipe Inserts John Guest Superseal Pipe Insert 22mm (Pack Of 2) in Yellow