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CLEARANCE - LA-CO SF4 Leak Sealer 1 Litre

£11.26 £9.38
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This product can only be sold to customers over 18 years of age and we will require your date of birth on your account at checkout.

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LA-CO SF4 leak sealer is an internal use leak sealer for sealing inaccessible leaks and weeping joints within the central heating system. By forming a soft seal within 24 hours of entering the primary circuit without blocking the pumps, valves or vents it prevents potential water damage, improves central heating system efficiency and saves fuel. 1 litre bottle Reduces pressure loss from a sealed system Will treat up to 10 radiators Non-toxic formulation
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Product Type
Leak Sealer
Weight (KG)
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Heating System Chemicals
Customer Questions
Are your products guaranteed?

Yes all our products come with a guarantee.

Guarantees or warranties vary, by product and manufacturer.

All our products are guaranteed for a minimum of 1 year (radiators vary - see individual product specifications, copper tube 25 years) but many offer longer warranties from the manufacturer, which you may need to register for.

On each product, under the specification tab, you will find more information on the guarantee or Warranty.

Follow links through to various manufacturers sites, as each manufacturer will have its own terms and conditions for qualifying for longer warranties.

You do not want to miss out by getting the wrong installer for some boilers etc.

As Boilers and radiators are installed by third parties, they do have to install in compliance with regulations and manufacturer standards to get the full benefit of the warranty.

As long as these are fulfilled, you will get the maximum life and support from your new purchase.

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