Application and Dosage
Use 1 pint of Fernox Leak Sealer F4 for every 26 gallons of circulating water (approximately 10 single radiators) 1. Almost empty the central heating header tank, and then pour in the Leak Sealer F4. 2. Draw off 1.3-2.6 gallons of water from the drain cock and return this to the header tank to ensure that no Leak Sealer F4 treated water is thrown away. 3. Repeat step 2 until all Leak Sealer F4 has been drawn into the circulating system. DO NOT simply leave the Leak Sealer F4 in the header tank. 4. Switch on the circulating pump and apply at least a small amount of heat to achieve an even distribution. In single feed indirect cylinders, e.g. ‘Primatic’ or similar, potable water chemicals must be used.
Fernox Leak Sealer F4 is a Polymer Emulsion.
Colour: Off white
Odour: Faint Form: Liquid
pH (conc.): 5.0 – 7.0
pH (soln): 7.85
SG: 1.0 at 68°F
Packaging, Handling and Storage
Leak Sealer F4 is supplied in 1 pint containers. Fernox Leak Sealer F4 is classified as non-hazardous, but as with all chemicals keep out of reach of children. In case of contact with skin or eyes, rinse immediately with plenty of water. Fernox Leak Sealer F4 is compatible with all Fernox products.