Description

Fernox Leak Sealer F4 is used throughout domestic heating systems for sealing small, internal, inaccessibleleaks.

Leak Sealer F4 works best in warm/hot circulating water and once evenly dispersed will usually beeffective within 1 – 24 hours.

The sealing efficiency of Leak Sealer F4 has been intentionally limited to preventblockage of safety devices, pumps, etc.

Benefits

• Ideal for reducing pressure loss from sealed systems
• Seals most weeps and small inaccessible leaks
• Saves time and money on draining down and repairing
• Does not cause blockages of pump, air vents etc
• Compatible with all metals and materials commonly used in central heating systems