Sentinel Rapid Dose Leak Sealer 400ml
Sentinel Rapid Dose CH Sealant
Sentinel Rapid Dose Leak Sealer 400ml, supplied with a host of adapters to fit radiator bleed valves.
To fill system, you need to screw adaptor onto can, which can be a little awkward.
Be careful not to drop the small rubber plug. Although it's not actually required. Dropped mine, lost it, but still managed to complete fill with no mess.
Within 12 hours, I'm no longer losing pressure on heating system. So, all good.
13 Nov 2014
"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
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.
2 Sep 2014
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