A reliable fix for stubborn leaks in your wet central‑heating system, the Heating Leak Sealant 500 ml + Radiator Dosing Funnel kit gives you a quick, mess‑free way to protect your boiler without costly dismantling.
What’s inside
– 1 × 500 ml bottle of leak‑sealer concentrate – a proven formula that travels with the water, meets air at the leak point and creates a durable seal over hair‑line cracks, weeping joints or tiny holes.
– 1 × Radiator dosing funnel (1 L capacity) – a sturdy nylon funnel with a brass ½” BSP swivel joint that slides onto almost any radiator (99 % fit).
How it works
1. Attach the funnel to the radiator’s ½” BSP tap.
2. Pour the concentrate into the funnel; gravity feeds the liquid straight into the system.
3. The sealer circulates, reacts with trapped air at the leak site and forms a plug – no need to locate the leak manually.
Key benefits
– Stops hidden leaks before they cause water damage or expensive boiler repairs.
– Compatible with most wet heating systems and safe for pumps, valves and air vents.
– Easy dosing thanks to volume markings on the bottle; a full fill takes about 17 seconds.
– Ideal for use with other additives such as inhibitors, sludge removers or anti‑freeze.
Specifications
– Leak‑sealer: 500 ml concentrate, wet‑system compatible.
– Funnel: 190 mm high, 52 mm opening, 1 L capacity, nylon body, brass thread.
Note: Not suitable for primatic single‑feed cylinders. Always read and follow the safety instructions on the label.
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