FERNOX F4 Leak Sealer -500ml (LSI)

Fernox f4 is ideal for reducing pressure loss from sealed systems. One 500ml recyclable bottle treats up to 130 litres of system water (16 radiators) and the equivalent of 250m2 of underfloor systems. Fernox leak sealer f4 seeks out and seals inaccessible, internal microscopic leaks fast Fernox f4 leak sealer saves time and money on draining down the system and repair costs Fernox f4 leak sealer 500ml is safe to use - does not cause blockages in pipework or vulnerable boiler components such as pumps, air vents and heat exchangers Designed to be left permanently in the system - compatible with all metals and materials, including aluminium, Weight: 1.2566348934 pounds, Manufacturer: Fernox