Sentinel Internal Leak Sealer 1Ltr (99730)

£ 15.99INC VAT

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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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View all: Sentinel Central Heating Leak Sealers

£15.99INC VAT (£15.99/Ltr)

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Sentinel Internal Leak Sealer 1Ltr is rated 4.7 out of 5 by 67.
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Rated 5 out of 5 by from Great cleaner Excellent product at a good price. Well done Screwfix
Date published: 2020-03-24
Rated 5 out of 5 by from Seals minor leaks I always keep a bottle handy just in case. There are times when finding a minor leak can cause major upheaval so I would use this on these occasions. I have a pressure vessel so can add to radiator, or simply pour into a Magnaclean or similar.
Date published: 2020-02-29
Rated 5 out of 5 by from Does exactly what it should I am always dubious about reviews claiming that a product works exactly as described..but this actually does. I'm a bit heavy-handed when it comes to plumbing and i don't take as much care as I know I can... which leads to little leaks here and there, normally a nip up stops these weeps and all is good. Id replaced all my radiators and after 2 months the pressure in my boiler dropped so much it threw a warning...topped up..all good for a week...pressure warning again. I went round all radiators with a dry tissue on all joints and couldn't find a leak. I isolated the bathroom towel rail, drained off some water by taking the bleed valve out, and poured the sealer in. Pressure has held in the boiler so far and staying steady at 1.2 bar. Top job on pinhole leaks that are difficult to detect.
Date published: 2020-02-20
Rated 4 out of 5 by from This Sealer Works Where Service Engineers had failed to cure a leak or even find it, this stuff sorted it within 30mins. I had an idea that it may even have been the over pressure valve leaking but we couldnt check as there had been a house extension built round it! ( very naughty)
Date published: 2020-01-11
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Sentinel central heating sealer: I have put 3 containers of leal sealant into my 100 ltr central heating system to stop a loss in pressure, there has been a vast improvemnt but it still leaks: is it safe to put a fourth bottle in?

Asked by: Rottne

Is it ok to use if system has radiator auto vent(s) fitted

Asked by: bodget

Once cured is this fuel safe ??

Asked by: treeves88

best way to use it?

I have replaced all my TRV's & Lockshields and still i lose pressure. there are no other obvious signs of leakage. Can i unscrew the blanking plug on my furthest away towel rail and pour this in? I have a combi boiler with 10 rads. Thanks
Asked by: Jimbob17

Can this be used in conjunction with x100 (inhibitor) and x200 (descaler)?

Asked by: Stephen2016
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Specification
Brand Sentinel
Label Info 5: Hazardous Chemical Content N/A
Manufacturer Guarantee 1 Year Guarantee
Pack Size 1
Pieces in Pack/Case 1
Product Type Internal Leak Sealer
Volume 1 Ltr
Volume 1 Ltr

Downloads

Safety Data Sheet (COSHH)