General description Always use a JG Speedfit superseal pipe insert when connecting Speedfit pipe to a Speedfit push-fit fitting. These inserts play a vital role in providing extra support to pipework, ensuring that the ends of the pipe remain round and minimizing any loss of shape that can occur when cutting. The JG Speedfit superseal pipe insert features dual o-rings for enhanced sealing security compared to standard inserts. Technical specifications Type: Superseal pipe insert Size: 10mm Pack quantity: 50 Usage Suitable for hot and cold water and central heating systems Designed for use with Speedfit pipes and fittings only Helps maintain structural integrity of the pipe connection Provides rigidity to the pipe when a side load is applied Other information The first o-ring prevents water from passing between the inside of the pipe wall and the outside surface of the insert. The second o-ring seals inside the push-fit fitting, creating a seal between the main pipe and the push-fit