A 500 ml bottle of Central Heating Leak Sealer Concentrate teamed with a handy radiator dosing funnel and a versatile draining tub gives you everything you need to stop hidden leaks without tearing the system apart.
Why it works – The concentrate circulates through your wet central‑heating circuit, meets air at the smallest crack or weeping joint and instantly forms a seal. No need to hunt down the leak; the product does the searching for you, protecting pipes, valves and pumps from damage.
What’s in the kit
– Leak‑sealer liquid (500 ml) – easy‑to‑read dosing marks, safe for most wet heating systems.
– Radiator dosing funnel – 1 L capacity, ½ ” BSP male thread, nylon body with brass swivel joint; fits 99 % of radiators and pours in about 17 seconds.
– Draining tub – 1.4 L rubber container with stretchable 10–22 mm pipe openings; works in vertical or horizontal positions and can be placed at any angle.
Key benefits
– Stops micro‑leaks, hairline cracks and weeping joints quickly.
– Prevents costly water damage and expensive boiler repairs.
– Simple gravity‑fed application—no spills, no extra tools.
– Compatible with other heating chemicals such as inhibitors, sludge removers or antifreeze.
Quick start – Attach the funnel to a ½ ” BSP tap on the radiator, pour the sealant, let gravity do the work, then collect any overflow in the draining tub. Follow the label instructions for safe use (not suitable for primatic single‑feed cylinders).
Keep your central heating running smoothly with this all‑in‑one leak‑sealing solution.
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