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 1 pint recyclable bottle treats up to 34 gallons of system water (16 radiators)
