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Leak Sealer F4

  • 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
  • 1 pint ≈ 500ml
  • Product code : 57883