Fernox F4 Central Heating Leak Sealer (LSI) 500ml

Fernox F4 Central Heating Leak Sealer (LSI) 500ml

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Product Information

500ml Fernox F4 central heating leak sealer (LSI).

  • Ideal for reducing pressure loss from sealed central heating systems.
  • Seals most weeps and small, internal, 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.

Product Uses:

  • Leak Sealer F4 works best in warm / hot circulating water and once evenly dispersed will usually be effective within 1 - 24 hours.
  • The sealing efficiency of Leak Sealer F4 has been intentionally limited to prevent blockage of safety devices, pumps, etc.
  • For long term protection against corrosion the system should also be treated with a Fernox Protector F1.
Product CodeGEC

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