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FERNOX Super Concentrate F4 Leak Sealer, 290ml

£36.86 £24.74
(You save £12.12)
Usually dispatched within 24 Hours (Mon-Fri)
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  • FERNOX Super Concentrate F4 Leak Sealer, 290ml

FERNOX F4 Super Concentrated Central Heating Leak Sealer - 290ml

Suitable for typical heating system i.e. 10 radiators or 100 litres 

  • Seals most weeps and small leaks
  • Saves time and money on draining down and repairing
  • Does not cause pump or air vent blockages 

Added via the radiator air vent or other point such as filling loop using a standard cartridge dispenser gun

Ideally untreated systems should be thorougly cleaned and flushed using Fernox F3 Central Heating Cleaner and then protected using Fernox F1 Central Heating Protector