Browse store

Fernox LS-X Leak Sealer 50ml (23614)

Silicone paste used as an external leak sealer and jointing compound.

  • 1 Year Guarantee
  • Suitable for Compression Joints & Screw Fittings
  • For External Use

More Info

Bulk Save Save up to 10%
QTY Price per item Saving
1 - 2 £5.49 (£109.80/Ltr) -
3 + £4.89 (£97.80/Ltr) Save 10%
£5.49INC VAT (£109.80/Ltr)

Add to basket for...

Fernox LS-X Leak Sealer 50ml is rated 4.6 out of 5 by 178.
  • y_2017, m_7, d_19, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_178
  • loc_en_GB, sid_23614, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix

Add to saved list...

Save
Rated 5 out of 5 by from Fernox Leak Sealer This product performs excellently for jointing BSP fittings as well as sealing 'old' weaping joints. A must have for all tool boxes! It is silicone based but the fittings are watertight immediately so you do not need to allow time for the paste to cure. NOT FOR USE ON GAS FITTINGS.
Date published: 2011-10-12
Rated 1 out of 5 by from 95% of contents usually wasted Not a bad sealer but inevitably the silicon round the cap area will harden even if you screw the back cap on tightly. After you've used it a few times it'll soon become unusable as it bungs up round the cap - then have to resort to puncturing the tube down the side to squeeze a bit out - what a waste!. Won't be using it again - stick to Hawk White.
Date published: 2017-07-05
Rated 5 out of 5 by from Worth buying I have found this product superb in fixing minor leaks and when assembling joints. Works almost straight away. Only marked down for value as a bit expensive for a small tube but cheaper than a leak !
Date published: 2017-06-28
Rated 5 out of 5 by from Excellent product Brother in law fitted a new inlet valve on the toilet and used this to seal it in, valve fitted in minutes and no leaks yea
Date published: 2017-06-27
  • y_2017, m_7, d_19, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_178
  • loc_en_GB, sid_23614, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix

Is it suitable to use to attempt to seal a leak from around where the tap is in an outdoor water butt. All components are plastic?

Asked by: Anonymous
Hello Trickydicki. The LS-X will be fine to use for this, however you need to give this a minimum of 4 hours to cure before refilling or getting wet again. Hope this helps.
Answered by: Fernox Client Services
Date published: 2017-07-11

hydraulic pipe work

would this be suitable to seal a small weep on a hydraulic fitting and how fast is curing time please
Asked by: wandango75
Hello, sorry, no.LSX will not be compatible with hydraulic fluid. Only for water. Curing time is 1-2 hours.
Answered by: Fernox Client Services
Date published: 2017-06-16

Can it stop a weeping connection from an old (1970s) stopcock. It's completely seized up (open) and a plumber put another above it. I don't want to disturb the old stopcock as it's connected to the mains with old black plastic pipe, but want to stop this

Asked by: DangerousDIYer
Hello DangerousDIYer. LS-X should be able to stop the leaks, however you will need to get the surface as dry as possible so that it can cure correctly.It would help to bind the weep with some PTFE tape, then coat with LS-X to seal the leak completely. Hope this helps.
Answered by: Fernox Client Services
Date published: 2017-04-27

Is this sealant clear?

I have a joint between a bib tap and bib tap extension that will not completely seal using rubber washers or PTFE tape. Can you let me know if this product is clear when cured?
Asked by: Anonymous
Hello SusieMaroon. When the LS-X cures it will go cloudy, so it will not be completely clear. Hope this helps.
Answered by: Fernox Client Services
Date published: 2017-03-18

Can this seal a leaking soil pipe?

The soil pipe was new 2 years ago. Where this meets the ground I notice there is a small leak of water on floor. Is this product good to close this small leaking?
Asked by: Convey766
Hello Convey766. The LS-X will be able to stop small leaks, as long as it is applied to a dry surface and give sufficient time (about an hour) to set. Hope this helps.
Answered by: Fernox Client Services
Date published: 2017-01-27
  • y_2017, m_7, d_19, h_14CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_12
  • loc_en_GB, sid_23614, prod, sort_[SortEntry(order=LOCALE, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix
Specification
Brand Fernox
Manufacturer Guarantee 1 Year Guarantee
Model No LS-X
Pack Size 1
Pieces in Pack/Case 1
Product Type Leak Sealer
Volume 50 ml

Downloads

Safety Data Sheet (COSHH)