Custom Bespoke Composite Doors & Aluminium and UPVC Panels
B205: Large Bubble Seal, Window Gasket / Door Seal - 1 Meter

B205: Large Bubble Seal, Window Gasket / Door Seal - 1 Meter

  • Extrudaseal
  • EXTE1709
  • In Stock
  • £1.61

  • Exc. VAT: £1.34
- OR -


UPVC Rubber Gasket – Large Diameter Round Bubble Seal – Black (B205)

The B205 black rubber gasket is a high-quality replacement seal featuring a large, round bubble profile. Designed for UPVC windows and doors, this gasket restores weather and draught protection where older gaskets have perished or become compressed. It fits securely into the profile groove and provides a long-lasting, watertight seal once installed.

Ideal for use across a wide range of UPVC systems from the last 20–30 years, including many now obsolete. The compressible rubber ensures a reliable fit across varying gap widths, while a unique flipper upstand enhances the weather seal for added protection against water ingress and draughts.

Key Features:

  • Sold in 1 metre increments (supplied in a continuous length)
  • Also available in 100m roll (see related products)
  • Easily cut to size with household scissors
  • Compatible with many legacy UPVC door and window systems

Top tip for installation:
Start installation at the centre of the top rail of your window or door – the area least exposed to moisture and wind. This ensures that the gasket along the bottom remains a continuous piece for optimal sealing. For corners or joins, a small drop of superglue can be used to secure the gasket without affecting performance.

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All images are for reference purposes only and can show multiple dimensions of a single product so you can see the product from different angles. This does not usually mean the amount shown in the image is the amount you purchase. Where multiple items are shown please check the description as only one is usually supplied unless otherwise stated.