Original price was: $10.01.Current price is: $9.34.



Sikaflex®-1A is a top-tier, high-performance, moisture-cured, 1-component, polyurethane-based, non-sag elastomeric sealant. Suitable for green and damp concrete applications. Compliant with Federal Specification TT-S-00230C, Type II, Class A, ASTM C920, Type S, Grade NS, Class 35, Use T, NT, O, M, A, I, and Canadian standard CAN/CGSB 19.13-M87.

SKU: N/A Categories: , ,

Product Data Sheet


  • Designed for all types of joints where maximum depth of sealant will not exceed 1/2 in.
  • Excellent for small joints and fillets, windows, door frames, reglets, flashing, common roofing detail applications, and many construction adhesive applications.
  • Suitable for vertical and horizontal joints; readily placeable at 40°F
  • Has many applications as an elastic adhesive between materials with dissimilar coefficients of expansion.
  • Submerged conditions, such as canal and reservoir joints.


  • Eliminates time, effort, and equipment for mixing, filling cartridges, pre-heating or thawing, and cleaning of equipment.
  • Fast tack-free and final cure times.
  • High elasticity - cures to a tough, durable, flexible consistency with exceptional cut and tear resistance.
  • Stress relaxation.
  • Excellent adhesion - bonds to most construction materials without a primer.
  • Excellent resistance to aging, weathering.
  • Proven in tough climates around the world.
  • Can be applied to green concrete 24 hours after pour
  • Can be applied to damp concrete 1 hour after getting wet
  • Non-staining.
  • Jet fuel resistant.
  • Certified to NSF/ANSI/CAN 61 for potable water (meets applicable requirements of NSF/ANSI 600).
  • Urethane-based; suggested by EPA as a caulk and crack sealant for radon reduction.
  • Paintable with water-, oil- and rubber-based paints.
  • Capable of ±35% joint movement.


  • 10.1 fl. oz. (300 ml) cartridge, 20 fl. oz. (600 ml) sausage,
  • 4.5 gal (17 L) in a 5 gal pail, 52 gal (197 L) in a 55 gal drum


  • White, colonial white, aluminum gray, limestone, black, dark bronze, capitol tan, stone and medium bronze.
  • Special architectural colors on request.

Additional information

Weight 2.5 lbs
Dimensions 1 × 1 × 1 in