Bostik Seal N' Flex

Bostik Seal N’ Flex is a professional-grade polyurethane sealant range designed for construction, expansion, and control joints. Flexible, durable, and highly weather-resistant, it delivers long-term performance across a variety of building applications.

Seal N’ Flex Variants

• Bostik Seal N’ Flex One Plus P590
  • One-part, low-modulus polyurethane sealant
  • Designed for expansion and control joints in concrete and masonry
  • Excellent elasticity to accommodate high joint movement
  • UV and weather resistant – suitable for interior and exterior use
  • Paintable once cured
• Bostik Seal N’ Flex Premium P795
  • High-performance, one-part polyurethane joint sealant
  • Extra durability and resistance to harsh conditions
  • Superior adhesion to a wide range of substrates without primer
  • Ideal for commercial, industrial, and infrastructure projects
  • Retains flexibility and seal integrity over time
• Bostik Seal N’ Flex Construction H361
  • Multi-purpose polyurethane construction sealant
  • Medium-modulus formulation – strong adhesion and flexibility
  • Suitable for sealing joints in precast panels, brickwork, blockwork, and general construction
  • Excellent toolability and smooth finish
  • Interior and exterior grade

Common Benefits Across the Range

• One-component polyurethane – easy to apply with standard caulking gun
• Flexible, durable, and weather-resistant
• Strong adhesion to concrete, masonry, brick, timber, metals, and many plastics
• Paintable after curing for a professional finish
• Trusted by builders for both residential and commercial applications

Specifications

• Packaging: 600ml sausages or 300ml cartridges (varies by product)
• Cure type: Moisture-curing polyurethane
• Colours: Wide range including grey, black, sandstone, and others (varies by variant)