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No Nonsense

No Nonsense External Leak Sealer 50g

Product Code: 35632

50g. For all types of joints and fittings and ideal for temporary repairs. Cures in 1 hour. Adheres to most wet or dry surfaces. Doesn't shrink and remains flexible, allowing seal to be undone. Operating temperature 40°C to ±200°C.

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Operating temperature 40 to 200°C.

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Safety Data Sheet (COSHH)


3.7857 5 14

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No Nonsense External Leak Sealer 50g 3.8 5 14 14
Save your Money, Doesn't Work I bought this for a tiny leak on a radiator valve. The product looks and smells exactly like ordinary clear silicone sealant. The leak was from the 12mm micro-bore joint into the valve. I tried several attempts but it just kept leaking, only a tiny drop every five minutes but the sealant couldn't stop it. Looks like a full drain down and new valve/pipe is the only solution. Don't waste your money! 19 Jan 2015
Leak saler I use this instead of/as well as PTFE tape and it does the job well. It is 60% of the price of the brand name product, but 100% the same. 23 Dec 2014
essential in my plumbing kit works just as well as branded products at half the price. Very handy stuff. 11 Dec 2014
No Good Leak sealant No Nonsense External Leak Sealer did not seal the leak from the radiator valve connection. It did not adhere to a wet surface as claimed and was no better than ordinary silicone sealant, a large tube of which is much cheaper. Managed to seal leak using self amalgamating tape. 21 Nov 2014
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Brand No Nonsense
Pack Size 1
Sealant Adhesive Volume 50 g
Total Product Weight 0.065 kg