Preflex 300


PREFLEX 300 is a two-part polysulphide joint sealant which is available in pouring and gun grade. It is supplied as a two-component sealant which is mixed and applied to movement and expansion joints in both vertical and horizontal applications.


PREFLEX 300 is designed for sealing movement and expansion joints in concrete and masonry structures where excellent chemical resistance is required. Structures include retaining walls, movement joints, underground structures, reservoirs.


  • Cures to form a flexible but tough seal.
  • Excellent adhesion to wide range of substrates.
  • Meets recognized standards.