Fernox F4 Express heating leak sealant, 400 ml aluminum can

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FERNOX

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Also suitable for gas boilers and condensing boilers
It is introduced into the system and distributes itself during normal heating operation.
After application and circulation, the agent typically seals the holes within a period of 1 to 24 hours.
As soon as oxygen enters the system, for example through a leak, the leak sealant bonds with the oxygen and permanently seals the leak.
Does not need to be rinsed.
For all types of heating systems
Seals small leaks such as cracks, brittle seals, leaky solder joints, etc.
Ideal for reducing pressure loss in closed systems
Does not cause blockages in pumps, vent pipes or narrow valves.
Can remain in the system
Saves time and costs