John Guest Speedfit 12mm Tube Insert - TSM1209S (Pack of 5)

These inserts are designed for 12mm outer diameter pipe.

No, John Guest Speedfit fittings and inserts are designed for tool-free installation and disconnection.

While they are designed for John Guest Speedfit fittings, some users may find compatibility with other systems, but it is not guaranteed. For optimal performance, use with genuine Speedfit fittings.

Each pack contains 5 (five) John Guest Speedfit 12mm Tube Inserts.

They are made from high-quality, durable materials suitable for plumbing applications.

It is generally recommended to use a new insert if a connection has been repeatedly made and broken, or if the original insert shows any signs of wear or damage, to ensure a secure seal.

Ensure the 12mm insert is fully pushed into the pipe and the pipe is cleanly cut. Verify that the Speedfit fitting is functioning correctly and the pipe is properly seated within it. Check for any debris on the pipe end or inside the fitting.

Ensure the pipe end is cut square and free from burrs. Gently twist the insert while pushing to help it seat. Avoid excessive force, which could damage the pipe or insert.

Ensure you are pushing the collet inwards correctly. If the fitting is old or has been over-tightened, it might be more difficult to release. Inspect the collet for damage; if it's bent, the fitting may need replacement.