• Professional jointing compound for plumbing and heating: LavaTap Fernox Water Hawk seals metal or plastic pipe threads in hot-or cold-water, central-heating and gas lines, giving reliable leak protection on first fix
• WRAS approved non-toxic plumbers paste: Safe for potable-water systems and food-service areas, this odour-free leak sealer replaces plumbers mait, putty and liquid PTFE without tainting taste or smell
• Smooth, easy application with excellent adhesion: Thick yet spreadable consistency coats threads evenly, filling small gaps and forming a water-resistant seal without special tools or excessive effort
• Corrosion-resistant water sealant: Formulated to resist chemical attack and rust, protecting pipe threads and fittings so joints stay serviceable and leak-free for the long term
• Versatile pipe thread sealant for multiple materials: Bonds securely to copper, brass, steel, PVC and ABS fittings, making it the ideal pipe sealant for leaking water pipes, valves, radiators and compression joints
• Durable 400 g trade tin for repeated use: Resealable metal container keeps compound fresh between jobs, providing ample plumbers paste for maintenance, emergency leak repairs and new installations

Fernox Water Hawk is a non-setting jointing compound for plumbing that helps create durable water seals on threaded pipe joints in domestic and commercial systems. This WRAS approved plumbers paste is suitable for both hot and cold potable water and can be used as a leak sealer or pipe thread sealant across a wide range of fittings and materials. Whether you're sealing radiator valves, compression joints, or gas line connections, Water Hawk spreads easily to form a flexible, watertight barrier that resists shrinkage and cracking over time. Unlike traditional putty or liquid PTFE, this compound stays soft, enabling future disassembly of joints without damage. Designed for professionals and DIY users alike, this 400 g tin provides enough compound for multiple jobs. It's a reliable joint compound for pipework maintenance, plumbing sealant for threaded fittings, and water sealant for bathroom and central heating applications. Ideal wherever leak sealant and jointing compound plumbing performance is required.