It is an easy-to-administer solution to the problem of weeping joints or pinhole leaks and it is compatible with other Sentinel products. Sentinel Leak Sealer will not cause blockages within the system. This product is an easy solution to small leaks or weeping joints in central heating systems. Ready to apply to the system, it is easy to dose and can be in the system in a matter of minutes if you use the Rapid-Dose format of this product.
Sentinel Leak Sealer is a straightforward way to take care of such leaks, which can develop into bigger issues if left unattended. Once inside the system, it will form a soft seal over the leaking area s , normally within 24 hours. It is suitable for all types of indirect central heating systems and is compatible with other Sentinel products which may already be in the system.
Larger systems should be dosed with twice this amount. After dosing is complete, the system should be operated normally for at least 15 minutes as heat is beneficial to the sealing process. For details of how to dose using the Rapid-Dose format of this product, please watch the Rapid-Dose video. Sealed Systems: If the system is empty, add to any convenient point before filling. Add to saved list Rated 5 out of 5 by Oddbob74 from This actually works Had a slow leak for years, pressure dropped to zero over a week.
Added 2 canisters to towelrack in bathroom, aired the system, pressured up again and have not touched it afterwards 5 weeks now. Highly recommended. Date published: Rated 5 out of 5 by Taz from SENTINEL leak sealer water pressure was going low on boiler everytime the heating was on,i had 2 radiators leaking from the brackets,and 1 of the pipes had a leak too,a very good family friend recomended this Rated 5 out of 5 by wutang from leaksealer wish i'd tried this months ago wasted 6 months plus trying to find a leak had a gas fitter in to check the boiler with no result.
Used this leak sealer in desperation an what do you know No Pressure loss in the last two weeks. Refilled the system ran it and the leak was sealed.
No problem. Cost effective and value for money. Rated 5 out of 5 by Harjit from excellent product for a reasonable price i have 15 radiator heating system with copper and PVC pipes. The system would loose pressure every week and half or so. I added the leak sealer via towel rail, about 3 weeks ago. The pressure seem to go a bit too high initially after adding the sealer but have not stabalised now.
Rated 5 out of 5 by TREX13 from Heating Engineer Used this many times and never had a call-back, wouldn't use anything else, perfect for weeping joints and leaking rad valves anywhere on the system. Rated 5 out of 5 by Oldskoolskater from Easy to add to systems Easy to add to a drained system, was a bit sludgier to add than a product such as X but presented no challenges to do so. Would recommend. Rated 5 out of 5 by pw45 from Works well!! Tried other leak sealers - this actually works!!
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