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Sentinel Internal Leak Sealer 1Ltr

Product Code: 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.

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Rated 5 out of 5 by System stop leak Easy to use done the job saved taking up laminate flooring 16 Sep 2015
Rated 4 out of 5 by This does work!! Overhauled my central heating system this summer - flushed the radiators - fitted TRV's -changed a dodgy pump and then protected with Sentinel X100. A month later a chrome towel rail started to leak from a weld that must have rusted from the inside. I didn't want the hassle or expense of changing the radiator so thought I'd try SENTINEL LEAK SEALER first. I must admit I was doubtful it would work and initially it didn't but after about 4 or 5 days the leak stopped (sealed from the inside)! A month down the line and the repair has held - another great product from Sentinel at a great price from Screwfix. 5 Jul 2015
Rated 5 out of 5 by Easy and painless Sorted 2 small weeps on hard to reach central heating pipes in no time. Pressure holding on the system again. Far less painful than a drain down and replacement. 19 May 2015
Rated 5 out of 5 by Does exactly what it says on t I've used this leak sealer twice. Both times it was to solve the problem of pin sized holes in radiators caused by internal corrosion. The leak on the first radiator was cured within a few minutes of adding the leak sealer. The larger and more troublesome leak that I tackled recently took longer (about 24 hours) to seal but has been dry ever since. Compared to the cost and hassle of fitting replacement radiators, this product is great value and I have no hesitation in giving it a 5 star rating. If it doesn't work for you, then either you are being too ambitious or you haven't followed the (very simple) instructions. 25 Apr 2015
  • 2015-10-08T17:40:42.984-05:00
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8 Sep 2015
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Hi there, Sentinel Leak Sealer can be added to the system in a number of ways. For open vented systems, dose via the expansion tank during the final fill. For empty sealed systems, add to any convenient point before filling. For full sealed systems, use a Sentinel Dosing vessel to inject via the filling loop or other access point. Sentinel Leak Sealer is also available in Rapid-Dose format
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9 Sep 2015
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Brand Sentinel
Colour White
Manufacturer Guarantee 1 years
Manufacturer Guarantee 1 years
Pack Size 1
Product Type Internal Leak Sealer
Sealant Adhesive Volume 1 Ltr
Total Product Weight 1073 kg