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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)




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Rated 1 out of 5 by Nothing more than silicone The product is simply a small tube of silicone sealant and should be advertised as such, no better no worse but don't expect much from it 23 Jul 2015
Rated 5 out of 5 by No Nonsense External Leak Seal Great buy, almost half the price of other branded products. It worked really well when dealing with a radiator header tank. It was no where near as smelly as other brands and when working in a closed in roof space with no ventilation this proved a real bonus. It was also easier to apply and tool than other products. Will definitely buy and use again. Have give 3 start for reliability as I have only just put it on, otherwise a 5 star product. 2 Mar 2015
Rated 2 out of 5 by THIS IS A JOINT SEALER 'External leak sealer' is misleading. This is a joint sealer, for compression or threaded fittings. I can see I would use this if I had a compression fitting which was weeping and I couldn't get it any tighter. In fact, the best name for this would be 'Small Tube of Clear Silicone Sealant' which is basically what it is. I bought this for a temporary fix on a pin-hole radiator leak which it was totally unsuitable for. Isn't that an 'external leak'? I actually needed some Araldite. 24 Jan 2015
Rated 1 out of 5 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
  • 2015-11-30 T09:45:33.733-06:00
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Brand No Nonsense
Pack Size 1
Pack Size 1
Product Type External Leak Sealer
Sealant Adhesive Volume 50 g
Total Product Weight 0.07 kg