2 extra O-Rings provide enhanced sealing Maintains structural integrity of the pipe connection Helps make the pipe more rigid when a side load is applied Suitable for hot and cold water and central heating systems Suitable for Speedfit pipes and fittings only Brand: JOHN GUEST SPEEDFIT LTD Manufacturer Stock Code: STS15 EAN Code: 5051258039903 Width: 29 mm Height: 15 mm Diameter: 15 mm Weight: 0.002 kg Manufacturer Guarantee: 25 years Sub-Category: Pipe Inserts and Liners Colour: WHITE Brand: JG Speedfit Pack Size: 50 Certification: WRAS Category: Fittings