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4.9

29 product ratings

28 users rated this 5 out of 5 stars
0 users rated this 4 out of 5 stars
0 users rated this 3 out of 5 stars
1 users rated this 2 out of 5 stars
0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

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by peda_763
15 Aug, 2025
You always need to use inserts if you want a good job first time with no leaks
I had numerous leaks from my caravan taps and shower, after taking the speed fit fittings off I could see that the pipework is a hard plastic but was still not rigid enough to seal properly ordered 12mm inserts and reassembled job done perfect no leaks
Verified purchase: YesCondition: New
by pridecarsltd
20 Aug, 2025
Fantastic option for sorting pipes out i...
Fantastic option for sorting pipes out in older motorhomes they work really well and are easy to fit, you can’t notice them once there in
Verified purchase: YesCondition: New
by micpatt_7864
08 Mar, 2024
Good product
It does what it's supposed to do. Strengthens the pipes and is a perfect fit for 12mm jg pipe with 8mm ID.
Verified purchase: YesCondition: New
by coski6
16 Sep, 2025
Good value and quality, easy to fit, wor...
Good value and quality, easy to fit, works fine.
Verified purchase: YesCondition: New
by peterrbuckley
27 Aug, 2025
Not fitted yet but look ok. Only let air...
Not fitted yet but look ok. Only let air through from one side when I blew through it. So should work just fine.
Verified purchase: YesCondition: New
by dabir_5527
19 May, 2025
Good quality parts...
Good quality parts
Verified purchase: YesCondition: New
by 4runnerharry
12 May, 2024
You Need These
Perfect for a good seal in the John Guest push fit adapters and when joining one hose to another without using a step up hose connector and using a jubilee clip to secure the hose.
Verified purchase: YesCondition: New
by woody_shops
19 Jun, 2025
Working well no leaks in camper van buil...
Working well no leaks in camper van build thanks
Verified purchase: YesCondition: New
by ge-olial-jo8zvggm
07 Jul, 2025
A must when fitting water system for pur...
A must when fitting water system for purfect seal
Verified purchase: YesCondition: New
by musgrave2007
31 Aug, 2023
Good fitment
Fit well into the 12mm pipe and seal into push fit joint without problems.
Verified purchase: YesCondition: New

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John Guest 12mm Tube Insert

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Ratings and reviews

Most relevant reviews

You always need to use inserts if you want a good job first time with no leaks

Fantastic option for sorting pipes out i...

Good product

Good value and quality, easy to fit, wor...

Not fitted yet but look ok. Only let air...

Good quality parts...

You Need These

Working well no leaks in camper van buil...

A must when fitting water system for pur...

Good fitment

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