Sentinel Rapid-Dose Leak Sealer is for internal application to seal small leaks and weeping joints in all types of indirect heating systems. Soft seal normally formed within 24 hours, dependent on temperature and leakage rate. Suitable for use with all metals including aluminium. Compatible with elastomers.

Converts the blank in a four-connector radiator into a Rapid-Dose dosing point. Contains backcheck valve which can be left in place permanently if required.

Multipurpose treatment to inhibit corrosion, scale, boiler noise and hydrogen gassing in all types of indirect heating systems, including those containing aluminium.

Long life system treatment eliminates lime scale and reduces noise. Suitable for use with all metals including aluminium. Non-acidic.

Sentinel Rapid-Dose X400 has been formulated for the effective cleaning of existing central heating systems where there is a significant amount of corrosion debris.

Controls and removes magnetic and non-magnetic debris from wet central heating systems and helps prevent sludge build-up.

1Ltr. General purpose treatment for total protection against scale and corrosion. For use in all types of indirect central heating systems, including those containing aluminium. Non-acidic.

275ml. General purpose treatment for total protection against scale and corrosion. For use in all types of indirect central heating systems, including those containing aluminium. Non-acidic.