Fernox LS-X Leak Sealer 50ml

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


  • 1 Year Guarantee
  • Suitable for Compression Joints & Screw Fittings
  • 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
  • Volume : 50 ml
  • Model No : LS-X
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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Fernox LS-X Leak Sealer 50ml is rated 4.6 out of 5 by 231.
Rated 5 out of 5 by from Saves time. More expensive than ptfe tape but much quicker and easier to use. Used it regularly in the last 10 years. Stops having to put a small fortune in the swear box.
Date published: 2017-04-11
Rated 4 out of 5 by from Good product. ..but Works well, but please Fernox do something about that awful cap which despite careful replacement will split in your toolbox and make contents useless. Especially relevant to DIY users with occasional use. 2 3/4 tubes thrown away.
Date published: 2017-04-11
Rated 5 out of 5 by from Great Product Brilliant for sealing weeping joints. Also great for those joints that end up getting hidden in stud walls / under the floor - no worries about it weeping un-noticed.
Date published: 2017-04-03
Rated 4 out of 5 by from Great leak sealer This product stopped a leak on a hot tank outlet union at 2.5 bar when all else failed.
Date published: 2017-03-29
Rated 4 out of 5 by from Excellent Product Very Good. Perfect for stopping those little drips under the bathroom sink. Also used it to apply on PVC press fit joints and PVC threaded connections. This product cures but never actually hardens which make it easy to disconnect at a later date whilst providing a watertight seil. Only issue is it is a bit pricy for a small tube but maybe worth it as no leaks to worry about.
Date published: 2017-03-02
Rated 5 out of 5 by from Super leak sealant Fernox LS-X is easy to use, comes in a conveniently sized tube and does exactly what it claims to do. Excellent.
Date published: 2017-02-27
Rated 5 out of 5 by from LS-X time saver A real time saver when re working older plumbing a smear on the olive before tightening a joint is all that is needed to ensure a watertight seal every time. Old fittings with a slight weep can be cured with a wipe of LS-X to the outside of the threaded fitting, no need to disassemble. Joints can be broken easily if replacement parts are needed in the future unlike some of the permanent white compounds. Only dropped a couple of stars on the value because it always sets in the tube after 6 months or so, no matter how careful I am to avoid contaminating it with water.
Date published: 2017-02-17
Rated 5 out of 5 by from Brilliant stuff Abs brilliant product, I had a radiator with a a practically stripped thread which just would not seal with paste or tape. This did the business first time. It might seem expensive for a small tube, however you only need a small amount. Another radiator was weeping from the base connection and I just smeared some Fernox around the joint - total success. Cannot recommend this stuff highly enough - so many uses on my motorbike as well!
Date published: 2017-02-16
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