Ultra-concentrated leak sealer for central heating systems. This 500ml bottle is sufficient for treating 100 Litres of water or a typical domestic heating system of up to 10 radiators. Corgi leak sealer is used to seal inaccessible leaks and weeping joints, whilst reducing pressure loss in sealed systems. It does not cause blockages in circulator pumps or air-vents.

Non-acidic, non-caustic – safe to handle To seal inaccessible leaks and weeping joints Concentrated 500ml bottle to treat up to 10 radiators Controls build-up of limescale and maintains boiler efficiency