15mm John Guest Tube Insert

The 15mm John Guest Tube Insert is designed to reinforce plastic tubing ends, providing added strength and sealing integrity when using push-fit fittings. It slides into 15mm plastic pipe to prevent compression or deformation, particularly in soft or thin-walled tubing.

Essential for caravan, marine, and light commercial plumbing systems, the insert ensures a secure push-fit connection by supporting the tubing from within.

Key Applications

• Caravan and RV plumbing systems

• Marine water and tank setups

• Low-pressure domestic or commercial plumbing

• Portable filtration and water delivery systems

Product Features

• Supports 15mm plastic tubing at connection points

• Prevents tube collapse and ensures leak-free sealing

• Designed for all 15mm John Guest push-fit fittings

• Easy to install—simply insert before connection

• Made from high-quality acetal

Why Choose John Guest Fittings?

John Guest fittings are used worldwide for reliable push-fit plumbing solutions. The 15mm tube insert is a simple but vital component to maximise the performance and lifespan of your connections.