THIOKOL® 2235SL is a high performance, self-leveling, chemical resistant elastomeric joint sealant. Due to its high polysulfide polymer content, it is resistant to many chemicals, shrinkage, aging, thermal stress and the effects of outdoor exposure.

Recommended Uses

  • Concrete expansion joints:
    – Bridges
    – Roadways
    – Warehouse floors
    – Secondary containment dike walls & floors
    – Tank chine seals
    – Concrete panels


  • Retains elasticity even as concrete moves; maintains flexibility over time
  • Resists mild acids, alkalies, and petroleum products
  • Resists effects of sunlight, rain, snow, ozone, aging, shrinkage and cyclic temperature changes, even after years of service
  • Contains no volatile solvents
  • Self-leveling for ease of application