Boss White Jointing Compound - 400G

Boss White Jointing Compound - 400G

Boss White is perhaps the most recognized name in the plumbing industry, serving as the standard-bearer for non-setting jointing compounds for decades. This 400g tin contains a high-quality, oil-based paste designed to seal threaded joints on metallic pipework. It acts as both a lubricant and a sealant, ensuring that connections are made easily and remain completely watertight and gastight under pressure.

Key Features and Application
Industry Standard: A trusted formula used by professional heating engineers and plumbers for sealing large and small diameter threaded fittings.

Non-Setting Properties: Boss White never sets hard, meaning it stays flexible within the joint. This allows for natural thermal expansion and contraction and ensures that joints can be easily broken and remade years later.

Versatility: Specifically formulated for use with hot and cold water (non-potable), natural gas, and low-pressure steam (0.2 bar up to 165°C).

Material Compatibility: Ideal for use on steel, copper, and brass threaded connections. It is frequently used in conjunction with hemp for large-diameter iron pipework.

Corrosion Inhibition: The compound helps protect the threads from corrosion and seizing, extending the life of the plumbing fixtures.

The Installer's Advantage
Boss White is the "old reliable" of the plumbing world. Its thick, adhesive consistency allows it to cling to threads without dripping, providing a superior seal even on slightly worn or imperfect threads. For the professional installer, using Boss White on radiator tails, pump valves, and boiler connections provides the ultimate peace of mind against "weeping" joints that can cause slow pressure loss in a system.

Essential Companion Products
To achieve a professional, high-integrity installation, the following products are recommended:

Potable Water Alternative: For drinking water applications, use the WRAS-approved: Hawk Jointing Compound (400g)

Radiator Installation: Perfect for sealing the tails on a 15mm Angled TRV & Lockshield Pack.

System Protection: Once your joints are sealed, protect the system internals with Hinton H14 System Inhibitor..

Specialist Support and Local Collection
Not sure whether to use Boss White or Boss Green for your specific project? Our trade counter staff can provide technical guidance on the correct sealant for your application.

Visit our trade counter and Bathroom Showroom at 61 Fullers Road, E18 2QB for expert advice and quick access to parts.