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Fernox F4 LSI Leak Sealer 500ml

£20.11 £16.76
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Age Verification

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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Fernox F4 LSI leak sealer seals most weeps and small inaccessible leaks in sealed systems without causing blockages of the pump, air vents etc  saving time and money on draining down and unnecessary repairs. 

  • Ideal for reducing system pressure loss
  • Compatible with all metals and materials commonly used in heating systems
  • 500ml easy-pour bottle
  • Non-toxic, environmentally friendly formulation
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Manufacturer
Fernox
Manufacturer Product Number
56603
GTIN
5014551566033
Product Type
Leak Sealer
Weight (KG)
0.550000
Maintenance Use
Heating System Chemicals
System use
Leak stop
Manufacturers Warranty
1 Year (Subject to Manufacturers T&C's)
Manufacturers brochure PDF File
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.

Please mind that only logged in users can submit questions.
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