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Sentinel Rapid Dose Leak Sealer 400ml

Product Code: 60012

Rated 4.4 out of 5 by 8 reviewers.

You Must Be Over 18 Years Of Age To Purchase This Product.

Sentinel Rapid-Dose Leak Sealer is for internal application to seal small leaks and weeping joints in all types of indirect heating systems. Soft seal normally formed within 24 hours, dependent on temperature and leakage rate. Suitable for use with all metals including aluminium. Compatible with elastomers.

  • Non-Toxic & Non-irritant
  • Compatible with Other Sentinel Rapid-Dose Products
  • High Stability & Readily Dispersible
  • Full Discharge in Approximately 30 Seconds
  • Does Not Block System
  • Rapid Product Addition to All Systems
  • Water Draw-off Not Required
  • System Cooling Not Required
  • Absolutely No Mess
  • View more information

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Safety Data Sheet (COSHH)

£20.99 (inc. 20% VAT)

4.375 5 8

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Page 1 of 4
Rated 4 out of 5 by "Absolutely no mess"?...Mmmm Ok, this is a clever way of delivering leak sealant to a pressurised system but don't take at face value the "absolutely no mess" or the Sentinel website video, which neatly misses out the inevitable messy oozing between detaching the tube and re-inserting the bleed valve. I was ready for that...but not for the fact that, although I gave it a good minute to discharge (30 secs recommended), the can was clearly not at all emptied when I'd finished. I would say there was a good 50 to 100ml left and this is almost impossible to contain in the pressurised can. I managed to grab a molegrip to stem the flow, re-insert the tube into the radiator and so get the last bit into the system...but this time I drained off a couple of pints to make it easier, and this is what I'd recommend to do in any case. Otherwise, a day later, it seems to be working, pressure holding up, fingers crossed... 30-Sep-2014
Rated 5 out of 5 by Impressed Very impressed with this. Very clear instructions and surprised by the little rubber bean in the small folded up paper which is designed to acts as a one-way valve in the fill tube. Just put it in via the circuit fill valve. Simple and easy. Only just put in so dropped a star on reliability - too early to say but other review are good on this aspect. 02-Sep-2014
Rated 5 out of 5 by Amazing fix and so simple too After removing a radiator for decorating, 1 solder joint developed a dipping leak. This product fixed it in minutes as opposed to stripping down the whole section of pipework. The pressure "dosing system" worked without a hitch, putting the product into a fully working and pressurised 9 rad combi based heating system. The clever no return valve and coupling adapter is a brilliant bit of design. Be careful to read all the instructions which are scattered around the tin and 2 sides of an enclosed paper. If you don't open and close valves in exactly the right order, the pressurised system will squirt at you ! The drip stopped soon after the system warmed up. Great product 30-Apr-2014
Rated 5 out of 5 by Leaking joints Bought this as I had some leaking joints and really didn't want to undo and drain the system. A bit fiddly and not too clear on how to use, removing the bleed valve and filling that way is messy as you pressurise the rad and when removing the pipe from the can it squirts out until you get the bleed valve back in, messy but is do-able. Fitted bleed valve within ten minutes drips had stop, easy and cheap. 25-Feb-2014
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Brand Sentinel
Pack Size 1
Pack Size 1
Sealant Adhesive Volume 400 ml
Total Product Weight 533 kg