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Sentinel Internal Leak Sealer 1Ltr (99730)

Internal Leak Sealer for small inaccessible leaks and weeping joints in all types of indirect heating systems including those containing aluminium components. Compatible with elastomers.

  • 1 Year Guarantee

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£13.99INC VAT (£13.99/Ltr)

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Sentinel Internal Leak Sealer 1Ltr is rated 4.9 out of 5 by 27.
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Rated 5 out of 5 by from Well worth trying My 15 year old Worcester 24i combination boiler was losing pressure daily resulting in the overheat sensor tripping out. Told by heating engineer that must have a leak in system as nothing wrong with boiler. Assumed not in upstairs pipework or radiators as no sign of water damage. Did not fancy having to lift carpets and flooring down stairs to try and find leak. Bought Sentinel leak sealer to give it ago although a little sceptical it would work. BUT IT DID WORK. Boiler pressure now stable for last ten days. Only thing to be aware of is that it does not flow easily as is like thick PVA glue. So make sure if using tubing and funnel that it is large enough to flow easily. I drained system down enough to take off valve from upstairs radiator and fed tube into pipe. Worked for me. Better than lifting all the downstairs flooring! Happy days.
Date published: 2016-11-21
Rated 5 out of 5 by from Well worth the money I purchased this to sort out a small leak I had on my towel radiator, I removed the non bleed valve plug and used a length of tubing to remove a ltr of water, I then poured in Sentinel leak sealer, replaced the plug, turned on the system bled the radiator, hey presto no more leak. I would highly recommend this product to anyone who has the same problem.
Date published: 2016-11-08
Rated 5 out of 5 by from Sentinel Leak Sealer I have used this product for over 12 years. The condition of Systems is always clean and corrosion free. The price at Screwfix is excellent.
Date published: 2016-09-24
Rated 5 out of 5 by from Great Very good product I really recommend it, work on the first time really great good nice brilliant smells nice !!!!!!!!!!!
Date published: 2016-04-18
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8 Questions  9 Answers

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2 Nov 2016
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london
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Answer: 
Hi there, the Sentinel Leak Sealer can be used with a Vaillant Ecotec Plus 618 Boiler.
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Customer Service
2 Nov 2016
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9 Oct 2016
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Belfast
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Answer: 
Hi there, Yes the Sentinel Leak Sealer is suitable for cast iron radiators. Please note that Sentinel Internal Leak Sealer is designed for just sealing pinholes and we would always recommend that ultimately, the cause of the leak is identified and rectified
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Customer Service
10 Oct 2016
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25 Sep 2016
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Nottingham
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Hi there,
The Sentinel Leak Sealer is compatible with the Sentinel X100.
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Customer Service
27 Sep 2016
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20 Jul 2016
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Alloa,Scotland
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, Plumbing/Heating Engineer
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Is this product safe with barrier pipe and plastic syestems such as HEP 20
7 Aug 2016
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High Wycombe
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Answer: 
Hi there, the Sentinel Leak Sealer is safe with barrier pipe and plastic systems such as HEP20.
Kind regards
Customer Service
22 Jul 2016
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I have a leaking toilet cistern which is inaccessible (the bathroom units were built around the loo) so I can't get to the leak without causing expensive carnage. Can I use this in a plastic cistern with a slow leak?
13 Jul 2016
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Southampton
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Answer: 
Hi there, unfortunately the Sentinel Leak Sealer is not suitable for this application.
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Customer Service
14 Jul 2016
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  • 2016-11-18 T05:37:33.493-06:00
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Specification
Brand Sentinel
Manufacturer Guarantee 1 Year Guarantee
Manufacturer Guarantee 1 Year Manufacturer's Guarantee
Pack Size 1
Pieces in Pack/Case 1
Pieces in Pack/Case 1
Product Type Internal Leak Sealer
Sealant Adhesive Volume 1 Ltr

Downloads

Safety Data Sheet (COSHH)