A 500 ml bottle of Heating Leak Sealant is the quick‑fix solution for stubborn micro‑leaks in radiators, boiler pipes and any wet central‑heating system. The concentrate circulates with your water flow, meets the air that escapes at a leak, and forms a durable seal over hair‑line cracks, weeping joints or tiny pin‑holes—so you never have to hunt the exact spot yourself.
Why it works
– Self‑acting formula – travels through the system and reacts only where air is present.
– Compatible with most wet heating circuits – safe for radiators, pipework and boiler loops (not for primatic single‑feed cylinders).
– No blockage risk – won’t clog pumps, valves or air vents.
How to use
1. Read the label and safety instructions carefully.
2. Pour the recommended amount (indicated on the bottle side) into the system’s feed‑off point.
3. Run the heating for the suggested time; the sealant will locate and seal leaks automatically.
Key specifications
| Feature | Detail |
|---|---|
| Volume | 500 ml |
| Type | Concentrated liquid |
| Application | Wet central‑heating systems |
| Sealant action | Air‑reactive micro‑leak sealing |
| Safety note | Not suitable for primatic single‑feed cylinders |
Prevent costly water damage and avoid expensive pipe replacements with this easy‑to‑apply leak sealer. Ideal for DIY homeowners and professional installers looking for a reliable, hassle‑free repair method.





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