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Fernox F4 leak sealer 290 ml

Product Code: 604006

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Product Description

Fernox Superconcentrate Leak Sealer F4 is used throughout domestic heating systems for sealing small inaccessible leaks. Leak Sealer F4 works best in warm/hot circulating water and once evenly dispersed will usually be effective within 1 - 24 hours. The sealing efficiency of Leak Sealer F4 has been intentionally limited to prevent blockage of safety devices, pumps, etc.

Product Features

  • Internal Leak Sealer
  • Ideal for reducing pressure loss in 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