PVCu Underground Drainage Blanking Plug with Boss Shoulder

• Material: PVCu
• Colour: Terracotta (system match)
• Function: Seals an unused boss connection on underground fittings
• Location: Moulded shoulder positively locates against boss face
• Jointing: Push-fit insertion into the boss; use with ring-seal where provided
• Standards & Approvals: BS EN 1401; BS 4660:2000 (where applicable)
• Manufactured: United Kingdom

Engineered to blank off an unused boss connection cleanly and securely, this plug delivers a reliable watertight closure during phased works or refurbishments. The moulded shoulder provides positive location against the boss face, giving a neat, flush finish and helping to keep debris out of the system while other connections are completed. It’s equally useful for future expansion—simply remove the plug and fit the branch when required.

Made from rigid, impact-resistant PVCu, the plug copes with typical trench environments and routine site handling. Installation is rapid: insert into the boss until fully seated against the shoulder; where a sealing ring is present, ensure it is correctly engaged. The terracotta finish matches UK underground components, while the material’s corrosion resistance supports long service life. Suitable for correctly configured foul and surface water layouts, and compatible with installations to BS EN 1401 and BS 4660:2000 (where applicable).

• Watertight seal for unused boss connections
• Shoulder provides a positive location and tidy finish
• Ideal for phased installations and future take-offs
• Fast, tool-free push-fit fitting
• Durable PVCu construction in terracotta finish