Bostik Seal N Flex 1

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

It has excellent resistance to normal weathering conditions such as rain, sunlight, snow, sleet, ozone, atmospheric contamination and pollution. This ability enables it to retain its original properties after years of exposure, refer to the CSIRO RILEM LONG- TERM SEALANT DURABILITY STUDY DBCE Doc. 97/196 (M)


  • Low modulus 100 %(+50%)
  • Excellent durability
  • One component, no mixing required
  • Australian made
  • Acoustic rating
  • Paintable (with limitations)
  • Non-staining

Recommended uses:

  • Insitu concrete & render
  • Precast and tilt-up panels
  • Brickwork & block-work
  • Plasterboard face and paper-lined recessed edges
  • Fibre cement sheet
  • Aluminium windows
  • Granite, sandstone and marble
  • GRC, fibreglass & most speciality panel systems

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