--- product_id: 49191272 title: "Fernox 603022 Ls-X Leak Sealer External, 50 g" brand: "fernox" price: "1.65 DT" currency: TND in_stock: false url: https://www.desertcart.tn/products/49191272-fernox-603022-ls-x-leak-sealer-external-50-g store_origin: TN region: Tunisia --- # WRAS approved for potable water 50g ready-to-use silicone paste Works from -10°C to 100°C Fernox 603022 Ls-X Leak Sealer External, 50 g **Brand:** fernox **Price:** 1.65 DT **Availability:** ❌ Out of Stock ## Summary > 💧 Seal leaks like a pro—fast, flexible, and fail-safe! ## Quick Answers - **What is this?** Fernox 603022 Ls-X Leak Sealer External, 50 g by fernox - **How much does it cost?** 1.65 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/49191272-fernox-603022-ls-x-leak-sealer-external-50-g) ## 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 - • **Temperature Tough:** Reliable performance from freezing cold to boiling hot water - • **Non-Hardening Formula:** Joints stay flexible and easy to undo—no permanent locks - • **Safe for Drinking Water:** WRAS approved, ensuring 100% safety for potable water systems - • **Versatile Compatibility:** Perfect for compression joints & screwed fittings on multiple materials - • **Fast-Acting Leak Sealing:** Stop leaks instantly with a proven silicone formula ## Overview Fernox 603022 LS-X Leak Sealer is a 50g ready-to-use silicone paste designed for external leak sealing on compression joints and screwed fittings. It operates effectively across a wide temperature range (-10°C to 100°C), never hardens to allow easy joint disassembly, and is WRAS approved for safe use with drinking water. ## Description Product Description LS-X is a proven, fast acting, silicone paste which is used as an effective external leak sealer and jointing compound. It is designed for use on hot and cold water services, including potable water. 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. Manufacturers Code: LS-X Box Contains 1 x LS-X External Leak Sealer Tube 50ml and instructions ## Features - Causes skin irritation. - Jointing compound and external leak - Ideal for use on compression joints and screwed fittings - WRAS Approved- Completely safe to use with drinking water - Never sets rock hard; joints can easily be undone - Ready to use, no mixing ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0051TPIQ6 | | Best Sellers Rank | 164,532 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,834 in Sealers 6,687 in Pumps & Plumbing Equipment | | Brand | Fernox | | Colour | Yellow | | Compatible Material | Various materials | | Customer Reviews | 4.4 4.4 out of 5 stars (1,360) | | Global Trade Identification Number | 05014551584341, 05014551999961 | | Included Components | Sealer | | Item Form | Paste | | Item Type Name | LS-X LEAK SEALER EXTERNAL 50 GM | | Item Weight | 0.07 Kilograms | | Manufacturer | Fernox | | Manufacturer Part Number | LS-X | | Material | Silicone | | Model Number | LS-X | | Number of Items | 1 | | Number of Packs | 1 | | Style Name | Compact | | Supported Standards | WRAS | | Surface Recommendation | Wall, Floor, Ceiling, Pipe | | UPC | 772040563226 | | Unit Count | 1.0 gram | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Fernox - **Item weight:** 0.07 Kilograms - **Material:** Silicone - **Style:** Compact - **Water resistance level:** Water Resistant ## Images ![Fernox 603022 Ls-X Leak Sealer External, 50 g - Image 1](https://m.media-amazon.com/images/I/61H+hWYe0yL.jpg) ![Fernox 603022 Ls-X Leak Sealer External, 50 g - Image 2](https://m.media-amazon.com/images/I/21i7hciqeDL.jpg) ![Fernox 603022 Ls-X Leak Sealer External, 50 g - Image 3](https://m.media-amazon.com/images/I/31nDmXb2YOL.jpg) ## Questions & Answers **Q: Is this product suitable for leaking cast iron joint of a drainage pipe?** A: As long as the joint isn't under pressure, (mains supply ) I have found it stops leaks in most cases , just clean off joint , apply product pushing into crevice or thread, it will then set to a jelly kind of substance when it comes into contact with water , good product for most applications so cant see why it wont work **Q: Canthis be used to seal a leak that in a shower fitting that is spraying at high pressure when used?** A: Depends on the size of the hole but i would say yes. Sealed water pressure at 2 bar with this stuff. **Q: Will this seal a leak in a campervan where the pipe has disconnected from the tap?** A: If the pipe has completely disconnected then this sealant will not help. If you are able to re-connect the pipe to the tap, a smear of the sealant on the connection before tightening it will help to stop a small leak (dripping). The sealant is very good for stopping drips and small leaks. It can't be used as a substitute for good plumbing. **Q: How do you apply this stuff?** A: Just to correct the early reply, Fernox's own site states LS-X is suitable for both compression and screw fittings. ## Frequently Bought Together - Fernox LS-X External Leak Sealer and Jointing Compound, Yellow - XFasten Self Fusing Silicone Tape for Plumbing White 1" X 36-Foot Non-Adhesive Leak Seal Tape Waterproof, Silicone Grip Tape, Rubber Tape Thick for Pipe, Hose Repair Tape, Stop Leak Tape --- ## 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.tn/products/49191272-fernox-603022-ls-x-leak-sealer-external-50-g](https://www.desertcart.tn/products/49191272-fernox-603022-ls-x-leak-sealer-external-50-g) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-22*