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🔩 Upgrade your plumbing game with pro-grade inserts that keep leaks out and confidence in.
The 12mm John Guest Inserts (Pack of 50) are precision-engineered brass fittings designed to reinforce semi-rigid 12mm outer diameter water pipes. Suitable for both hot and cold applications, these inserts prevent leaks by strengthening pipe ends and compensating for imperfect cuts. Ideal for professional and DIY plumbing projects, this bulk pack ensures durability, reliability, and easy installation.
| ASIN | B09LHRWNVF |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 1,528 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 12 in Pipe Fittings |
| Colour | White |
| Customer Reviews | 4.7 4.7 out of 5 stars (134) |
| Date First Available | 10 Nov. 2021 |
| Item Weight | 40 g |
| Manufacturer | John Guest |
| Material | Brass |
| Number of Pieces | 50 |
| Product Dimensions | 12 x 12 x 4.5 cm; 40 g |
| Size | 12mm |
D**W
Improves reliability and longevity of 12mm push fit pipes
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.
D**E
John quest
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
A**R
Pipe plug
Did the job purchased for with ease
B**N
Grat value
Good quality and great value.
P**L
Fit great 👍
Fit great
T**S
JG quality items.
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.
P**L
It works
OK bit of kit
R**.
Do what they are supposed to do, just expensive!
Good quality inserts as you expect from John Guest but you pay the premium price for the name.
Trustpilot
Hace 1 mes
Hace 1 mes