---
product_id: 48646455
title: "LS-X External Leak Sealer, 50ml, White, Plastic & Metal, Handheld, Sealer"
brand: "fernox"
price: "€ 30.90"
currency: EUR
in_stock: true
category: "Fernox"
url: https://www.desertcart.gr/products/48646455-ls-x-external-leak-sealer-50ml-white-plastic-and-metal
store_origin: GR
region: Greece
---

# hand-powered for on-the-spot fixes works on compression joints & fittings 50ml precision sealing volume LS-X External Leak Sealer, 50ml, White, Plastic & Metal, Handheld, Sealer

**Brand:** fernox
**Price:** € 30.90
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal leaks like a pro—because every drip counts!

## Quick Answers

- **What is this?** LS-X External Leak Sealer, 50ml, White, Plastic & Metal, Handheld, Sealer by fernox
- **How much does it cost?** € 30.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/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

- • **Safety First:** Use with PPE to avoid irritation—professional-grade protection for pros
- • **Manual Control:** Hand-powered application ensures accuracy and no dependency on tools
- • **Compact 50ml Tube:** Perfectly sized for quick, precise leak repairs without waste
- • **Trusted Brand Quality:** Fernox reliability with 4.4-star rating from over 1,100 users
- • **Versatile Leak Sealing:** Seals compression joints and screwed fittings with ease

## Overview

Fernox LS-X External Leak Sealer is a 50ml handheld, manual sealing compound designed for quick, effective repairs on compression joints and screwed fittings. Trusted by professionals and DIYers alike, it offers precise application in a compact tube, backed by a strong customer rating. Handle with care due to potential skin and eye irritation.

## Description

Product description Fernox 61016 50ml LS-X External Leak Sealer Safety Warning Product can cause skin irritation and is irritating to eyes. Always use appropriate personal protective equipment when handling the product.

## Features

- Causes skin irritation.
- brand new

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00JPDFCEW |
| Best Sellers Rank | 16,339 in DIY & Tools ( See Top 100 in DIY & Tools ) 329 in Sealers |
| Brand Name | Fernox |
| Colour | Grey |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,126) |
| Included Components | 50ml Tube |
| Manufacturer | Fernox |
| Manufacturer Part Number | 61016 |
| Material Type | Plastic, Metal |
| Model Name | LS-X External Leak Sealer |
| Model Number | 61016 |
| Number of Items | 1 |
| Power Source | Hand Powered |
| Recommended Uses For Product | sealing leaks in compression joints and screwed fittings, jointing compound application |
| Style Name | Manual |
| Tank Volume | 50 Cubic Centimetres |
| UPC | 798256123580 |
| Unit Count | 50.0 millilitre |

## Product Details

- **Brand:** Fernox
- **Colour:** Grey
- **Material:** Plastic, Metal
- **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.

## 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

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-09-18*