Sikaflex®-1a is a premium-grade, high performance, moisture-cured, one-component, polyurethane-based, non-sag elastomeric sealant.

  • Capable of ± 35 % joint movement.
  • Eliminates time, effort, and equipment for mixing, filling cartridges and cleaning of equipment.
  • High elasticity - Cures to a tough, durable, flexible consistency with exceptional cut and tear resistance.
  • Excellent adhesion - Bonds to most construction materials without primer in most cases.
  • Excellent resistance to aging, weathering.
  • Readily placeable at 4 °C (39 °F)
  • Resists to fuel, mineral oils, and dilute minerals, plant and animal fats.
  • Odorless, non-staining, can be painted over with water, oil, and rubber-based paints. Since some paints dry slowly and the surface may remain slightly tacky, a preliminary test is essential.
  • Meets CAN/CGSB 19.13-M87, Classification MCG-2-25-B-N.
  • Meets Federal Specification TT-S-00230C, Type II, Class A.
  • Meets Federal Specification Spec TT-S-00227E
  • Meets ASTM C920 Type S, Grade NS, Class 35. Use T, NT, O, M, G, I.
  • Jet fuel resistant.
  • ANSI/NSF Standard 61 approved for contact with potable water (Black, White, Colonial White, Aluminum Grey, Capital Tan, Limestone, Dark Bronze colours only).
  • Urethane-based, suggested by EPA for radon reduction.
  • USDA approved (chemically acceptable for use in meat and poultry processing areas under federal inspection).
  • Meets the requirements of CFIA for use in food plants
  • Ministère des Transports du Québec acceptance.
  • Product qualified by The Road Authority (TRA).
  • SWRI validated.
  • Product recognized by the British Columbia Ministry of Transportation(BC MoT).