--- product_id: 48646455 title: "LS-X External Leak Sealer, 50ml, White, Plastic & Metal, Handheld, Sealer" brand: "fernox" price: "€ 28.14" currency: EUR in_stock: true reviews_count: 8 category: "Fernox" url: https://www.desertcart.hr/products/48646455-ls-x-external-leak-sealer-50ml-white-plastic-and-metal store_origin: HR region: Croatia --- # Dries in 1 hour Stops leaks instantly Handheld & easy to apply LS-X External Leak Sealer, 50ml, White, Plastic & Metal, Handheld, Sealer **Brand:** fernox **Price:** € 28.14 **Availability:** ✅ In Stock ## Summary > 💧 Seal leaks fast, save money faster! ## Quick Answers - **What is this?** LS-X External Leak Sealer, 50ml, White, Plastic & Metal, Handheld, Sealer by fernox - **How much does it cost?** € 28.14 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/48646455-ls-x-external-leak-sealer-50ml-white-plastic-and-metal) ## Best For - fernox enthusiasts ## Why This Product - Trusted fernox brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Fast-Dry Formula:** Seals leaks in just 60 minutes, saving you time and hassle. - • **Compact & Portable:** 50ml tube fits in your toolkit for emergency fixes anytime, anywhere. - • **Cost-Saving Repair:** Avoid expensive replacements and plumbing calls with a simple DIY fix. - • **Non-Permanent Seal:** Flexible seal that’s easy to remove when repairs or replacements are needed. - • **Versatile Leak Solution:** Perfect for taps, pipes, boilers, and motorhomes—no plumber needed. ## Overview Fernox LS-X External Leak Sealer is a 50ml handheld solution designed to quickly and effectively seal external leaks on metal and plastic plumbing components. It dries within an hour, creating a flexible, non-permanent seal that’s easy to remove when needed. Ideal for emergency repairs on taps, pipes, and boilers, it offers a cost-effective alternative to costly replacements or professional plumbing services. ## Description Product description Fernox 61016 50ml LS-X External Leak Sealer Safety Warning Harmful if swallowed or inhaled. Keep out of reach of children. Use only in a well-ventilated area. Avoid contact with skin and eyes. In case of accidental contact, rinse immediately with plenty of water and seek medical advice. Dispose of the product in accordance with local, state, and federal regulations. Review: Did the job. - This LS-X is brilliant stuff, I had a problem with my motorhome taps. The rubber seal had disintegrated and I couldn’t get a replacement, only option was to buy new taps, until I saw the LS-X reviews, so I thought I’d give it at try. It did the job perfectly, dries in one hour, doesn’t set hard so easily removed when necessary. I always have a tube handy, it saved me £60 on new taps. Highly recommend for those hard to fix leaks. Regards James Review: Worked for me! - Simultaneously having issues with a pipe connecting to my toilet and my boiler at the same time. Applied this product left it to dry for 12 hours and sure enough: no more drips! Give it a try it’s far cheaper than calling out a plumber! ## Features - Causes skin irritation. - brand new ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00JPDFCEW | | Best Sellers Rank | 6,922 in DIY & Tools ( See Top 100 in DIY & Tools ) 169 in Sealers | | Customer Reviews | 4.4 4.4 out of 5 stars (1,095) | | Date First Available | 24 Mar. 2014 | | Item model number | 61016 | | Manufacturer | Fernox | | Material type | Metal, Plastic | | Package Dimensions | 14.1 x 3.6 x 2.9 cm; 60 g | | Part number | 61016 | | Power source type | Hand Powered | ## Product Details - **Brand:** Fernox - **Colour:** Grey - **Material:** Metal, Plastic - **Recommended uses for product:** sealing leaks in compression joints and screwed fittings, jointing compound application - **Tank volume:** 50 Cubic Centimetres ## Images ![LS-X External Leak Sealer, 50ml, White, Plastic & Metal, Handheld, Sealer - Image 1](https://m.media-amazon.com/images/I/811Cc4hmpQL.jpg) ## Questions & Answers **Q: Will this stop leaks from a plastic water butt connector pipe?** A: As I do not know the exact constituents of the materials that comprise your water butt, other than them being plastic - I cannot answer this question definitively. What I can inform you, is that I have used Fernox on a uPVC drainage coupling that served as waste pipe/trap under a bathroom sink unit. I used Fernox to seal the threads on the uPVC couplings. All I did was 'wipe' the faces of the 'male' thread - not too much - then wind the other coupling onto the thread pulling the drainage trap tight. That was 4-years ago and the arrangement did not leak. I hope this helps. **Q: Can you use this product on wet or damp surface** A: I used this product to seal a small leak on a toilet waste between the outer ring and main body of the waste pipe, where I assume a small amount of water would always be present on the inside. I did make the outside surface as dry as possible before I applied the product - I think it probably works best if you can get the surface as dry as possible before you apply it. This remedy seems to have worked - no more leak! Hope this is helpful. **Q: Can this be used to seal plastic waste compression pipes?** A: This will seal anything, even if it is seeping water. It's does what it say's on the box. **Q: will this help me i had a pipe under my sink driping onto the floor for a few months and it got faster now tape does not seem too work** A: This product seems to be nothing more than standard silicon sealant (even smells like it) I used it as an extra safeguard on water pipe compression fittings for initial assembly. I'm not sure it would seal existing leaks. The solution to your problem might be to use a Loctite product such as S77 or 542 which which penetrates the leaking joint by capillary action and is much more effective. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Did the job. *by P***P on 22 October 2023* This LS-X is brilliant stuff, I had a problem with my motorhome taps. The rubber seal had disintegrated and I couldn’t get a replacement, only option was to buy new taps, until I saw the LS-X reviews, so I thought I’d give it at try. It did the job perfectly, dries in one hour, doesn’t set hard so easily removed when necessary. I always have a tube handy, it saved me £60 on new taps. Highly recommend for those hard to fix leaks. Regards James ### ⭐⭐⭐⭐⭐ Worked for me! *by M***E on 17 January 2026* Simultaneously having issues with a pipe connecting to my toilet and my boiler at the same time. Applied this product left it to dry for 12 hours and sure enough: no more drips! Give it a try it’s far cheaper than calling out a plumber! ### ⭐⭐⭐⭐ Great seal but can get messy *by G***L on 6 February 2025* Really good stuff for preventing nip leaks or for those of us who like a belt and braces approach to plumbing. It won’t take much around a seal to make it water tight. The only reason for not giving it 5 stars is that it can look a bit messy and you can’t paint over it - so be neat with applying and wear gloves! ## Frequently Bought Together - Fernox 61016 50ml LS-X External Leak Sealer - EVO-STIK Plumber's Mait Quick Leak Repair Putty, Instant Repairs for Pipes, Radiators, Tanks & Cylinders, Waterproof, 50g - Duck Tape Wrap-Fix Self-Fusing Repair Tape | Self Amalgamating | Self Bonding for Plumbing | Leaking Pipe Repair Tape | Rubber Tape | Waterproof Black 25mm x 3m --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/48646455-ls-x-external-leak-sealer-50ml-white-plastic-and-metal](https://www.desertcart.hr/products/48646455-ls-x-external-leak-sealer-50ml-white-plastic-and-metal) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-14*