FERNOX 62563 F4 Leak Sealer 10L/2.6 Gallons Pail

Leak Sealer F4 is a internal leak sealer developed for use throughout a central heating system to seal small, inaccessible leaks and weeps which may cause pressure loss and boiler breakdown

• Ideal for reducing pressure loss from sealed systems
• Seeks out and seals inaccessible, internal microscopic leaks fast
• Saves time and money on draining down and repairing
• Safe to use - does not cause blockages in pipework or vulnerable boiler components such as pumps, air vents and heat exchangers
• Left permanently in the system - compatible with all metals and materials, including aluminum
• One 10 litre product treats up to a 2000 litre system at a dose rate of 0.5%

Product Information

Homeowner Leaflet

Contractor Leaflet

SDS