Description
Product information
Seal small leaks in central heating systems with Fernox F4 Leak Sealer. Supplied in a 500ml bottle, it targets inaccessible leaks in radiators, boilers, and pipework. Compatible with all system types and helps reduce pressure loss without damaging components.
- Seals inaccessible leaks and weeping joints internally.
Features and benefits
- It can make better use of resources to repair rather than replace items
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