Superconcentrate Central Heating Leak Sealer - 16000163

Home > Fernox Water Treatment Products

Fernox Superconcentrate Leak Sealer is used throughout domestic heating systems for sealing small inaccessible leaks.

  • Works best in warm/hot circulating water
  • Once evenly dispersed will usually be effective within 1 - 24 hours. 
  • The sealing efficiency of Leak Sealer has been intentionally limited to prevent blockage of safety devices

 A standard mastic gun is used to dose the Fernox Leak Sealer directly into a radiator air-vent using the special adapter supplied with the product. The entire process can be completed in less than five minutes!

Please note that all prices include 20% VAT

​​​​​​​Due to posting restrictions we can no longer post liquids or canisters


Customer Reviews
Write an online review and share your thoughts with other shoppers!