The Fernox F4 Express Central Heating Leak Sealer 400ml is a specially formulated product designed to quickly and effectively seal leaks in central heating systems. Suitable for use with combi boilers powered by gas or petrol, this sealant is ideal for fixing leaks in boilers and can be easily applied to walls, under sinks, or on tabletops. With its trusted brand name and specific formulation, Fernox offers a reliable solution to help detect and stop leaks in your heating system efficiently.
eBay