Fernox LSX External Leak Sealer & Jointing Compound – 50ml Tubes (3-Pack)

Fernox LSX External Leak Sealer & Jointing Compound – 50ml Tubes (3-Pack)

Features

The Fernox LSX external leak sealer and jointing compound provides a reliable, fast-acting plumbing solution designed specifically for sealing weeping compression joints and threaded pipe fittings without dismantling the system. Supplied as a convenient set of three 50ml yellow tubes, this ready-to-use formula requires no mixing and remains permanently flexible, ensuring joints can easily be undone during future maintenance. It does not shrink or crack with age and performs reliably across extreme temperatures—from below freezing to above the boiling point of water. Furthermore, it is fully WRAS approved and completely safe for use with wholesome drinking water systems. As a result, you achieve a professional, watertight seal that prevents drips quickly and keeps your plumbing fully compliant.

• Fast External Leak Sealing: Formulated to seal minor weeping compression and threaded joints externally. Therefore, it saves you from draining down systems or dismantling pipework.
• Permanently Flexible Formula: Never sets rock hard over time. Consequently, joints remain easy to disassemble and service during future maintenance work.
• Wide Temperature Tolerance: Engineered to operate effectively from below freezing point to above the boiling point of water. Moreover, it delivers reliable performance across various central heating and hot water applications.
• WRAS Approved Safety: Fully certified and compliant with UK water regulations for use with drinking water. As a result, it provides complete peace of mind for domestic plumbing repairs.
• Convenient 3-Pack Supply: Supplied as a set of three 50ml tubes. Furthermore, it gives you ample stock for multiple repairs or keeps your toolkit fully equipped for emergency call-outs.

Technical

• Product Type: External Leak Sealer & Jointing Compound
• Brand: Fernox
• MPN: 61016
• Product Range: LSX (LS-X)
• Quantity Supplied: Pack of 3 Tubes (50ml Each / 150ml Total)
• Packaging: Yellow Squeezy Tube
• Application: Compression Joints and Screwed Threaded Fittings
• Temperature Range: Suitable from Below Freezing to Above Boiling Point of Water
• Certification: WRAS Approved (Safe for Drinking Water)

Details

Discovering a slow, stubborn drip on a compression joint or threaded pipe fitting underneath a sink or behind a radiator is always frustrating, especially when draining the whole system is impractical. Moreover, many standard sealants either fail under temperature changes or set too hard for future disassembly.

Fortunately, Fernox LSX external leak sealer solves the problem with professional efficiency. Because it applies directly to the outside of weeping joints and cures into a durable, flexible seal, it stops leaks instantly. Consequently, you achieve a clean, secure, and WRAS-approved repair without the hassle of taking your pipework apart.