Picture 1 of 1

Stock photo

Fernox LS-X External Leak Sealer - 50ml

4.77121 product ratings

Plumb2u (63057)
98.7% positive Feedback

Price:

£7.95

Free postage

Estimated delivery Fri, 17 May - Sat, 18 May

Returns:

30 days return. Buyer pays for return postage.

Condition:

New

Fernox 61016 LSX 50G External Leak Sealer Fernox LS-X External Leak Sealer and Jointing Compound. It's a silicone paste used as an external leak sealer and jointing compound. Features Ideal for use on compression joints and screwed fittings Never sets rock hard, joints can easily be undone Ready to use, no mixing Does not shrink or crack with age Suitable for use from below freezing point to above boiling point of water Completely safe to use with drinking water WRAS Approved Product Physical Properties Fernox LS-X contains Acetoxysilane. Colour: Milky - white Form: Paste Odour: Mild. Acetic pH: <3 SG: 1.0 at 20 C Application and Dosage When sealing leaks, relieve the water pressure before applying and whilst LS-X is setting, draining system if necessary.

View all details

4.8

4.8 out of 5 stars based on 121 product ratings

121 product ratings

104 users rated this 5 out of 5 stars
13 users rated this 4 out of 5 stars
0 users rated this 3 out of 5 stars
1 users rated this 2 out of 5 stars
3 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 108 reviews

5 out of 5 stars
by andy.clegg08 Feb, 2017
Forget Boss and PFE tape, LS-X is far better
As a jointing compound Fernox LS-X is unbeatable. Used LS-X on all my compression joints and radiator threads works a treat. Just squeeze on from the tube it sticks where it is put and avoids any sort of mess. All joints 100% sealed. Any excess is easily wiped of with a tissue for a clean finish. I would not recommend for sealing leaks, as it advises in the leaflet that is in the box, Araldite multi-purpose putty is better for that.
Verified purchase: Yes | Condition: New
5 out of 5 stars
by duckanjuice01 Apr, 2019
Wonderful product
I fitted a water pressure reducing valve and there was a slight drip from one of the connections. I remade the joint with PTFE tape but it still dripped. I tried PTFE paste, but that did not work. Bought the Fernox LS-S and it stopped dripping.
Verified purchase: Yes | Condition: New
4 out of 5 stars
by graemealex55528 Dec, 2019
Good product but not perfect.
I bought this to seal a leaking PVC waste pipe and it was very effective and easy to use. Only downside was that some of the contents had cured when I went to use it again a few months later, so I could only apply by cutting open the tube below the section that had 'solidified'. Effectively I got two applications from the tube, the rest was wasted.
Verified purchase: Yes | Condition: New
5 out of 5 stars
by AFTsIWr_RTm@Del...28 Sep, 2017
Sealer & Jointing Compound LS-X
Although designed mainly for plumbing fittings, It is really good for airlines and small pneumatic fittings and can also be used as a slow setting "locktite" on nuts and bolts, and some bearings, the sort of thing that's always useful on the shelf.
Verified purchase: Yes | Condition: New
5 out of 5 stars
by rob716822 Jun, 2016
Highly recommended
This was suggested on a YouTube clip as something you could use in conjunction with PTFE tape on plumbing joints. I bought some and used it when fitting a new 3-way diverter valve in my heating system. It seems to work well, even on one joint that couldn't be fully tightened as it was a right-angled joint and had to point the right way. I would suggest using gloves when using it though: it's extremely sticky stuff and soap and water won't touch it.
Verified purchase: Yes | Condition: New

Picture 1 of 1

Fernox LS-X External Leak Sealer - 50ml

All listings for this product

About this product

Product Identifiers

Product Key Features

Dimensions

Additional Product Features

Ratings and reviews

Most relevant reviews

Forget Boss and PFE tape, LS-X is far better

Wonderful product

Good product but not perfect.

Sealer & Jointing Compound LS-X

Highly recommended

Best-selling in Other Home Plumbing & Fixtures

Save on Other Home Plumbing & Fixtures

You may also like