• Fernox Leak Sealer
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Fernox Leak Sealer

$120.96
$120.96
Sale Sold out
Tax included.

Leak Sealer F4 is suitable to be used throughout a central heating system to seal small leaks and weeps which may cause pressure loss and boiler breakdown. Once dispersed within the system it will be effective 1-24 hours after application. The unique sealing efficiency of this proven product has been specifically developed to prevent blockages or restrictions within the boiler or vulnerable system components such as pumps and safety devices.

  • Ideal for reducing pressure loss from sealed systems
  • Seals most weeps and small inaccessible leaks
  • Saves time and money on draining down and repairing
  • Does not cause blockages of pump, air vents etc
  • Compatible with all metals and materials commonly used in central heating systems

Delivery and return

We aim to process and dispatch all orders within 1–2 business days. Delivery times may vary depending on your location and the shipping method selected at checkout. Once your order has been shipped, you will receive a confirmation email with tracking details so you can monitor your package every step of the way.

For assistance with returns, exchanges, or shipping inquiries, please contact our customer support team.

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