Sikaflex® PRO-3 Purform®

Polyurethane sealant for floor joints and civil engineering applications

Sikaflex® PRO-3 Purform® is a 1-part, moisture curing, elastic polyurethane sealant. It seals many kinds of joint configurations in floors and civil engineering structures. The elasticity is maintained over a wide temperature range and high mechanical and chemical resistance provides good durability.

  • High movement capability: ±25 % (ISO 9047), ±50 % (ASTM C719)
  • Fast development of mechanical properties
  • High mechanical resistance
  • Extended application range to lower temperatures
  • High chemical resistance
  • High resistance to weathering
  • Non-staining to a wide range of substrates
  • Monomeric diisocyanate content <0.1 %: no user safety training needed (REACH restriction 2023, Annex XVII entry 74)
  • Bubble-free curing
  • Good adhesion to many construction materials