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    As part of our commitment to sustainable manufacturing and supply chain security, Polypipe Building Products has transitioned the production of Polysewer pipe to our advanced facility in Horncastle, Lincolnshire.

    This move includes a multi-million-pound investment in high-speed extrusion technology, ensuring a consistent UK-based supply and a significant reduction in our operational carbon footprint.

    Key Changes: The New 'BU' Pipe Profile

    The manufacturing transition coincides with a design update for our 225mm and 300mm Polysewer pipes. Installers and merchants should note the following identifiers:

    • Identification Code: New pipe lengths will feature a 'BU' suffix printed on the pipe.
    • Seal Colour Change: The sealing rings have transitioned from Black to Blue.
    • Performance: All new components are rigorously tested in our UKAS-accredited laboratory and maintain full Kitemark certification standards. 

    Compatibility Guide: Black vs. Blue Seals

    To ensure a leak-free installation and compliance with BS EN 13476, it is vital to use the correct seal for your pipe profile.

    Critical Safety Note: Black seals are not compatible with the new 'BU' suffix pipes.

    Seal Colour Legacy Polysewer Pipe New 'BU' Suffix Pipe
    Black Seal ✅ Compatible ❌ Not Compatible
    Blue Seal ✅ Fully Compatible ✅ Fully Compatible


    The "Universal" Solution: The new Blue Seal has been engineered for total backwards compatibility. It can be used seamlessly across both legacy stock and the new 'BU' pipe variants.

    On-Site Support and Changeover Process

    We are dedicated to a seamless transition for our partners. To facilitate this:

    1. Site Visits: Polypipe Building Products representatives are currently visiting sites to swap out loose seals and seal packs on fittings at no additional cost.
    2. Replacement Stock: If you or your contractors require Blue Seals to replace existing Black Seal stock, please contact your local representative immediately.
    3. Technical Assistance: For specific project queries, our technical office is available at 01509 615100.

    Technical Summary for Contractors

    • Products Affected: 225mm and 300mm Polysewer Pipe & Fittings.
    • Action Required: Check pipe markings for the 'BU' suffix before fitting seals.
    • Rule of Thumb: If the pipe has a 'BU' code, only use Blue Seals.