£8.33 Excl. VAT
LS-X
Makes water work
Fernox External Leak Sealer is compatible with all types of metals commonly found in heating systems, including iron, steel, copper, and aluminum.
It can be used in both pressurized and open vented systems.
However, it is not suitable for use in underfloor heating systems or areas where the temperature exceeds 100°C (212°F).