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
Additional Information
Technical Specification
  • Brand : Fernox
  • 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

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€6.55 Incl. 20% VAT

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Fernox LS-X Leak Sealer 50ml is rated 4.5 out of 5 by 61.
Rated 1 out of 5 by from Product arrived solid Couldn't use it as it arrived solid in the tube, maybe it was damaged or past it's shelf life.
Date published: 2018-05-30
Rated 5 out of 5 by from Good product Have used LSX for a few years now, tend to use it as a jointing paste combined with ptfe. Also use it on olives and unions. A MUST !! Ps it does go off quite quick when opened.
Date published: 2016-12-28
Rated 4 out of 5 by from Fernox LS-X Leak Sealer Bought this item for a small central heating leak, used in conjunction with brass capillary fittings on 22mm copper pipe, No Leaks!! When applied appeared to be very similar to normal clear silicon sealer, easy to apply and does what it says on the box.
Date published: 2014-07-16
Rated 1 out of 5 by from Not What it Says I know other people swear by this product so maybe my experience is out of kilter, but about as much use as a chocolate fireguard. Just do the job properly and don't bodge it with this stuff.
Date published: 2014-07-10
Rated 5 out of 5 by from Great stuff sealed an external leek very well, used plumbers tape and this glue in layers. would use again, keeping a tube on site now.
Date published: 2014-06-18
Rated 5 out of 5 by from Good product Running a length of copper tube between two fixed points in a repair As not quite aligned the compression joint was sweating a bit Blob of this on the olive sorted it out
Date published: 2014-04-22
Rated 5 out of 5 by from This stuffs a life saver I had problems getting a good seal on a bad thread. This worked a treat always got a tube in the bag now
Date published: 2014-03-01
Rated 5 out of 5 by from good stuff i am replacing a new radiator,which is wider than the old one and bent the compression bit of the valve,causing very tiny leaking. was thinking need to cut the olive off and put on a male compression connector. but.....ls-x helped nd sorted out everything,saved a lot of trouble. this is my first review on housing working stuff.Really helpful product.
Date published: 2014-02-22
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