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    Fernox Leak Sealer 500ml F4

    Leak Sealer F4 is a internal leak sealer developed for use throughout a central heating system to seal small, inaccessible leaks and weeps which may cause pressure loss and boiler breakdown. Once dispersed within the system, the product finds the area of oxygen ingress and forms a polymer to seal the pinhole. Effective within 1-24 hours after application, the unique sealing efficiency of this market-leading water treatment chemical has been proven to prevent blockages or restrictions within the boiler or vulnerable system components such as pumps and safety devices. A leak can be quickly and efficiently sealed, without the need for a complete system drain down.
    SKU: 56603
    Availability: In stock
    £18.02 incl tax
    i h
    Delivery date: 1-2 days
    • Ideal for reducing pressure loss from sealed systems
    • Seeks out and seal inaccessible, internal microscopic leaks fast
    • Designed to be left permanently in the system and is compatible with all metals including aluminium
    Products specifications
    Product TypeLeak Sealer
    ManufacturerFernox
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