• Home
  • Sika Sikaflex-1a Black Sealant 10 oz
Image for Sika Sikaflex-1a Black Sealant 10 oz from White Cap
+ / - Hover over image to Zoom
Other Views

Sika Sikaflex-1a Black Sealant 10 oz

Brand: Sika Mfg#: 91011
Product#: 438431243
Based on Product Sourcing
Hazardous material shipping restrictions apply. You may be contacted by Customer Service if an alternate shipping method is required.

Please Login to receive Special Pricing
Not Registered? Create an Account


Sikaflex-1a is a premium-grade, high-performance, moisture-cured, one-component polyurethane-based, non-sag elastomeric sealant used in certain Sika Sarnafil roofing or waterproofing system flashing details. Typical applications include wall, curb and dra


  • 1-part, non-sag, polyurethane elastomeric sealant/adhesive
  • 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 and flashing Suitable for vertical and horizontal joints; readily placeable at 40 deg F Has many applications as an elastic adhesive between materials with dissimilar coefficients of expansion Submerged conditions, such as canal and reservoir joints Fast tack-free and final cure times High elasticity - cures to a tough, durable and flexible consistency Excellent adhesion - bonds to most construction materials without a primer Excellent resistance to aging, weathering Odorless, non-staining Paintable with water, oil and rubber-based paints 1a is a class 35 sealant with +/-35% movement USDA-approved, Sealant, Waterproofing and Restoration Institute (SWRI) validated
  • Sikaflex-1a is a premium-grade, high-performance, moisture-cured, polyurethane-based sealant Meets Federal specification TT-S-00230C, Type II, Class A Meets ASTM C-920, Type S, Grade NS, Class 25, use T, NT, O, M, G, I; Canadian standard CAN/CGSB 19.13-M87


  • Brand: Sika
  • Product Line: Sikaflex-1a
  • Finish: Smooth
  • Tensile Strength: 175 psi
  • Form: Paste
  • Resists: Chemicals
  • Media: Carbon Dioxide, Foam
  • Base Type: Polyurethane
  • Drying Time: 4 - 3 hr Track Free
  • Functional Cure: 4 - 7 days
  • Type: 1-Part, High Performance, Premium Grade
  • Shore Hardness: 40 +/-5 Shore A
  • Temperature Range: -40 TO 170 deg F
  • Application Temperature: -35 TO 140 deg F
  • Flammability Rating: 1
  • Specific Gravity: 1.19
  • Standards: ASTM C920
  • Color: Black
  • Coverage: 15 Linear ft
  • Composition: Polyisocyanate Prepolymer, Xylene
  • VOC Content: 40 g/l
  • Odor/Scent: Aromatic
  • Packing Type: Cartridge
  • Capacity: 10 oz
  • Usage: For All Types of Joints