Calmag Calshot Leak Sealer (Concentrate)

The CalShot Leak Sealer (CHEM-CALSHOT-LS) effectively seals hard-to-reach leaks and weeping joints within 24 hours. It prevents blockage in pumps, valves, and air vents, while reducing pressure loss in sealed systems by creating a soft seal in a short period. The solution remains in the system without the need for flushing and can treat up to 10 radiators.

✔ The concertina-style squeeze bottle enables fast and easy dosing—completing the task in under five minutes, saving time and costs for installers.

✔ No additional fittings are required to dose into a radiator, filling loop, or header tank. 1/2″ Adaptors are included.

✔ The 330ml concentrated formula is sufficient to treat a standard system of 10-12 radiators or 100 litres.

✔ Effectively repairs minor leaks.

✔ Helps maintain pressure in sealed systems.

✔ Specially formulated to ensure no blockages in pumps, valves, or air vents.