Fernox F4 Leak Sealer 500ml

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. A leak can be quickly and efficiently sealed, without the need for a complete system drain down.

Features:

• Seeks out and seals inaccessible, internal microscopic leaks fast.
• Once dispersed within the system, the product finds the area of oxygen ingress and forms a polymer to seal the pinhole.
• Effective within 1-24 hours after application, the unique sealing efficiency of this market-leading water treatment chemical has been proven to prevent blockages or restrictions within the boiler or vulnerable system components such as pumps and safety devices.
• Ideal for reducing pressure loss from sealed systems.
• Saves time and money on draining down the system and repair costs.
• 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.
• One 500ml recyclable bottle treats up to 130ltr of system water (16 radiators) and the equivalent of 250m² of underfloor systems.
• The recommended ’in use’ concentration of the product is 0.385%.

Technical data:

• Brand - Fernox
• Product Type - Leak Sealer
• Size - 500ml
• Colour- Off White
• Odour - Faint
• Form - Viscous Liquid
• pH - 5.0 - 7.0 (Conc) / 7.0 - 8.5 (In Use)
• SG - 1.0 At 20°C

Application:

• For open vented systems add via the feed and expansion tank.
• For sealed systems add via a suitable dosing point (e.g. a towel rail or an in-line system filter).
• Alternatively, use a suitable dosing vessel to inject the product into the system.
• In single feed indirect cylinders, e.g. ’Primatic’ or similar, potable water chemicals must be used.

Standards & Certifications:

• Classified as non-hazardous

Please Note:

• Classified as non-hazardous, but as with all chemicals, care should be taken. Keep out of reach of children.