Fernox LS-X Leak Sealer 50ml

Product Code: 23614
Fernox LS-X Leak Sealer 50ml
Product Code: 23614
50ml. Silicone paste used as an external leak sealer and jointing compound.


  • Suitable for Compression Joints & Screw Fittings
  • For External Use
  • For External Use
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Safety Data Sheet
€6.55 Incl. 20% VAT
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Additional Information
Technical Specification
  • Brand : Fernox
  • Sealant Adhesive Volume : 50 ml
  • Product Type : Leak Sealer
  • Model No : LS-X
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Manufacturer's Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

Click here to see information on our delivery charges and times



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


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Fernox LS-X Leak Sealer 50ml is rated 4.6 out of 5 by 206.
Rated 5 out of 5 by from Super Sticky Sealant Great product to ensure a leak free thread-thread joint. Never used as an external leak sealer, but have used it for flanges and gaskets. Performs better than Hawk in some circumstances, and for certain material combinations.
Date published: 2016-11-17
Rated 4 out of 5 by from FERNOX Sealer Good stuff worked well and seals well. If there was a problem the sealer seems to seal in Black Iron Oxide from the system into your fingers.
Date published: 2016-11-15
Rated 5 out of 5 by from Outdoor tap leak Great product. I had to move my outdoor tap up and removed the tap from the wall plate. Reconnected but couldn't get a good seal with PTFE tape. Used this in conjunction with the tape and worked first time. Great product.
Date published: 2016-10-15
Rated 5 out of 5 by from Stop that drip Had a slow leak that would sometimes drip. Used Fernox LS-X Leak Sealer by applying a bit at a time on a finger of my gloved hand around the leak and within minutes it was fixed and drip free :)
Date published: 2016-10-06
Rated 5 out of 5 by from Great product I was looking for something to seal a small leak under a kitchen sink, and the reviews all looked good. Its a great product - easy to use and did the job first time - will definitely keep a tube in my tool box.
Date published: 2016-09-30
Rated 5 out of 5 by from sealed the deal! Had an "expert" fit me a new toilet, every pipe joint was left over tightened and leaking, I used this product before on a small leak and had enough to stop all the leaks around the new toilet! fantastic product, would always recommend its use!
Date published: 2016-09-21
Rated 5 out of 5 by from Sealed my leaky bits! Used this to stop some leaks on a few compression fittings. Sold the problem instantly
Date published: 2016-09-14
Rated 2 out of 5 by from Doesn't work Its states that it seals externally on a fitting. Have a few leaks on copper pipes. And the leaks are only weeping ever so slighty not dripping constantly, probaly one driy every 10mins, smeard this stuff all over. With the pipework relieved of pressure also. Left it a full 24 hours and then checked it with pressure back in the pipes to find the small leaks still the same so absoluty useless for this use! So if your thinking of using it for this use as it says it works for then save ur money and try something else.
Date published: 2016-09-14
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