LavaTap - Sentinel Internal Leak Sealer 1L - High Performance Central Heating Leak Sealer for Boiler Pressure Drop, Radiator Leak Repair, Weeping Joint Fix and Heating System Water Treatment

Professional Grade Central Heating Protection The Sentinel Leak Sealer 1L is a high-performance internal leak sealer designed to protect your home from the damage and inconvenience of central heating leaks. Specifically formulated for both professional plumbing engineers and DIY enthusiasts, this liquid solution targets small, "invisible" leaks and weeping joints that are often impossible to locate manually. By sealing these gaps from the inside, it helps stabilize your system and stops the frustration of a constant boiler pressure drop.Safe and Non-Clogging Technology Unlike lower-quality alternatives that can cause catastrophic blockages, Sentinel’s advanced formula is non-clogging. It circulates freely with the system water, forming a soft seal only when it comes into contact with the air at a leak site. This ensures that your radiators, valves, and expensive central heating pumps remain completely safe and operational while the leak is being addressed, often resulting in a quieter