Fernox 56603 Leak Sealer

The Fernox Chemicals Central Heating Leak Sealer F4 - 500ml is perfect for reducing pressure loss in sealed systems. It effectively seals most weeps and small, hard-to-reach leaks. This sealer saves both time and money as it prevents the need for draining down and repairing. It ensures there are no blockages in pumps, air vents, or similar components. The F4 formula is compatible with all metals and materials commonly found in central heating systems, making it versatile and reliable. This product is efficient for maintaining system integrity without causing further issues.. Fernox Chemicals Central Heating Leak Sealer F4 - 500ml