Fernox Central Heating Leak Sealer F4 Express - 400ml
Quick and convenient – doses in 30 seconds.
Simple to use with no mess.
Added via a radiator adapter or filling loop supplied.
Non-toxic, environmentally friendly formulation.
100% recyclable can.
Seeks out and seals most weeps and leaks.
Saves time and money on draining down and repairing.
Does not cause blockages of pumps, air vents, etc.
Compatible with all Fernox Protectors