BOSTIK SEAL N FLEX 1 (Box of 20) | WPD Group

Bostik Seal N' Flex® 1 is a low modulus, one component, Class-A polyurethane sealant. When cured it will form a tough and flexible seal capable of cyclic expansion and compression movement of 100% (+ 50%) of the original installed joint width.

Recommended Uses

Seal N’ Flex 1 is best suited to insitu concrete and render, brickwork and blockwork, for weatherproof sealing of joints in precast and tilt up panels, and on plasterboard face and paper-lined recessed edges. It can be used internally and externally, and on control and expansion joints in façade work.

Product Details

  • Polyurethane sealants benefit from greater joint movement capability over conventional silicone sealants. This makes Seal N’ Flex 1 perfect for sealing larger joints between building materials, which can be concealed by painting over with acrylic-based paints.
  • +/- 50% dynamic joint movement
  • Resistant to normal weathering conditions such as rain, sunlight, snow, atmospheric contamination and pollution. Retains its original properties even after years of weather and UV exposure
  • Excellent adhesion to masonry and concrete
  • Acoustic rated and non-staining
  • Made in Australia

*For special order quantities, please call 1300 557 973 or email us


  • 20 x 300ml Cartridges per Box
  • 20 x 600ml Sausages per Box


Bostik Seal n Flex 1 PDS

Bostik Seal n Flex 1 SDS