12mm John Guest Inserts (Pack of 50)

I use these on the ends of 12mm push fit pipes for both hot and cold. They’re recommended for hot but they’re so cheap, why not use them for cold too ?Easy to fit and they resolve any issues where the pipe isn’t cut 100% straight.

JG inserts, essential to guarantee water tight fittings, especially in high vibration environments like a camper. Easy to use, cut the pipe, push in the insert, push over the fitting.

Good quality inserts as you expect from John Guest but you pay the premium price for the name.

Fit great

If you’re working with 12mm semi-rigid pipe—especially in a camper van, motorhome, or boat—these John Guest inserts are absolutely essential. Far too many people skip this step, not realizing how important these little inserts are. Without them, the ends of your pipes can deform (especially with hot water runs), and that’s when leaks start—often when you least expect it.I’ve seen people try to save a few minutes and end up with endless headaches from leaks and water damage. With these inserts fitted, you actually reinforce the pipe ends and ensure a proper, watertight seal every time. If you want true peace of mind and a leak-free system, don’t even consider running semi-rigid pipe without them. I’m a repeat buyer for a reason—they’re a small detail that makes all the difference. Highly recommended!

Received with thanks I can now go to replace the pipe work on our caravan now I have been putting off for a while very pleased great quality and will be ordering more items soon

Works perfect

OK bit of kit