- Sentinel Central Heating Radiator Leak Sealer 1L

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Product description
- Central heating leak sealer: targets and seals minor pinhole leaks and weeping joints effectively within all types of indirect central heating systems to prevent water damage
- Boiler pressure drop fix: restores system stability by addressing the "phantom" pressure loss in combination boilers and sealed systems that causes frequent emergency shut-offs
- Internal leak sealer technology: forms a durable yet soft polymer seal normally within 24 hours without causing permanent blockages in radiators, valves, or internal components
- Safe non-clogging formula: circulates freely throughout the pipework and is specifically designed to be safe for high-value components such as central heating pumps and air vents
- Universal metal compatibility: suitable for use with all common system metals including copper and steel and is fully compatible with aluminium and synthetic elastomers
- High capacity treatment: one 1 litre bottle provides sufficient active solution to treat a typical domestic heating system of up to 10 radiators or 100 litres of water
Delivery
Order before 1pm Monday to Friday for same-day dispatch. Delivery is next working day to England and Wales and 2 to 3 working days to Scotland. Delivery is free on UK orders over £90 inc VAT.
Returns
Return any item within 30 days of purchase. Returns are free if the item is faulty, damaged or incorrect. See our returns page for details.



