F4 Leak Sealer 500ml Liquid Seal for Central Heating Pipe Work Leaks Water Underfloor Heating Non-Corrosive Non-Toxic Compatible with Most Heating Systems Long-Lasting Seal

Description

🚿 Seal leaks fast, stay worry-free—because your heating deserves the best!

Fernox F4 Leak Sealer is a 500ml ready-to-use, polymer-based liquid designed to quickly and reliably seal leaks in central heating and underfloor heating systems. Compatible with all common pipe materials, non-toxic, and eco-friendly, it ensures long-lasting protection without causing blockages or system damage.