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CHEMICAL & ADHESIVES: CENTRAL HEATING CHEMICALS
Fix Minor Central Heating Leaks Fast Without Blockages
Fix Minor Central Heating Leaks Fast Without Blockages
Sentinel Leak Sealer 1L is an easy-to-dose, professional-grade solution designed to seal small leaks and weeping joints across all indirect central heating systems. Formulated for high efficiency, it circulates safely through your system to plug pinhole leaks without causing blockages in boiler pumps, valves, or automatic air vents.
Whether you're a professional heating engineer or fixing a home system, Sentinel Leak Sealer restores system pressure quickly and prevents costly water damage.
Fast-Acting Leak Repair: Quickly seals minor leaks, weeping joints, and micro-cracks in central heating pipework.
Zero Blockages: Readily dispersible formula safely seals small gaps without clogging heat exchangers, pumps, or thermostatic radiator valves (TRVs).
Universal Metal Compatibility: Safe to use with all common metals, including aluminium, copper, cast iron, and stainless steel.
Elastomer & Seal Safe: Fully compatible with synthetic rubbers, washers, and seals throughout the heating circuit.
Non-Toxic & Easy to Apply: Non-irritating formula compatible with other Sentinel water treatment products and inhibitors.
Quality Assured: Manufactured under ISO 9001 certified quality controls.
Volume: 1 Litre
Dosing: 1 Litre treats a standard domestic system (approx. 8–10 radiators)
Suitable For: Open-vented and sealed indirect central heating systems