High-performance assembly, glazing adhesive and sealant with acceleration option

Sikaflex®-668 is based on Purform®, an industry-leading polyurethane with less than 0.1% monomeric diisocyanate for better health protection and occupational safety. The Sikaflex®-668 adhesive system is specifically designed for the rail industry. It is suitable for assembly bonding and glazing applications; its outstanding weathering durability and unique resistance to a wide variety of cleaning agents make it an ideal solution for use in exterior joints. Sikaflex®-668 is compatible with Sika’s black-primerless bonding process. Sikaflex®-668 can be accelerated with Sika’s Booster and PowerCure system.  

  • Resistant to a wide variety of cleaning agents 
  • Passes EN45545 R1/R7 HL3
  • Curing can be accelerated with Sika Booster and Sika PowerCure
  • Very good weathering stability
  • Ultra-low isocyanate content
  • Phthalate-free