This handy little tube is the perfect way to create an external seal to prevent against leakages in your boiler and central heating system.

Fernox Leak Sealer LS-X is a 50ml silicone paste used as a sealant and jointing compound on combi and other low water content boilers. Suitable for compression joints and screw fittings, the treatment will last for approximately five years – helping to add life to your boiler and minimise the risk of leakage.

So add a bit of peace of mind that your central heating system isn’t going to experience any costly leaks, by adding Fernox’s Leak Sealer LS-X into your system today.

Product information:

  • 50ml silicone paste
  • Complete leak sealing and jointing compound
  • Suitable for compression joints and screw fittings
  • For external use
  • Safe for use with combi and low water content boilers
  • Will not block valves or vents
  • WRAS approved
CE Approved

Technical Drawings

£8.27 (Inc. VAT)

11 Available

Fernox LS-X Leak Sealer 50ml - 61016 Reviews

Add your own review
5.0/ 5
2 reviews
  • Chris no longer frustrated
    5/ 5

    New kitchen annoying leak in cold supply joints desplte changing fittings etc etc still leak then was reccomended to try this plumber used it and leaks gone

  • jay
    5/ 5

    Best stuff around and best price by far