Sika 90618/C437521 Sikaflex Polyurethane Construction Sealant, White, 10 Oz

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For sealing cracks in concrete walls, expansion joints, gaps construction joints, windows, doors and siding. Can be used as a bedding sealant for door and window installations. Multi purpose sealant.
SKU: 41484155
MFG: 90618/C437521
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Commercial grade, polyurethane construction sealant for sealing cracks, construction joints, doors, windows, siding, roofing, gutters, sills, thresholds, basements, vents, skylights, wall penetrations, and precast panels. Superior adhesion to most common building materials including concrete, wood, brick, aluminun steel, glass, tile, marble, stone, and etched PVC. Seals out radon gas. Permanently elastic, cures to a tough, durable, flexible consistency with exceptional resistance to cutting, tearing, aging, and weathering. Meets or exceeds Federal specifications TT S 00230C, Type II, Class A; ASTM C 920, Type S, Grade NS, Class 25. (1) 10.1 Oz cartridge yields 24 linear feet of adhesive in a 1/4'' bead. Fresh adhesive clean up immediately. Old adhesive clean up with paint thinner to other approved solvent.


  • Color: White
  • 10 Oz Cartridge
  • Multi purpose
  • Fast curing
  • Commercial grade
  • Will not harden or shrin
  • Paintable, sandable, and stainable after cure
  • Polyurethane construction sealant for sealing cracks
  • Ideal for vertical and horizontal joints
  • Used for all types of joints where maximum depth will not exceed 1/2"
Reproductive Harm and


MFR: 90618/C437521
SKU: 41484155
UPC: 033886000413
Brand: Sika
Weight: 2.0 lb