Sikaflex 1a Construction Sealant
Sikaflex-1a is a premium-grade, high-performance, moisture-cured, 1-component, polyurethane-based, non-sag elastomeric sealant. Meets Federal specification TT-S-00230C, Type II, Class A. Meets ASTM C-920, Type S, Grade NS, Class 35, use T, NT, O, M, G, I, A; Canadian standard CAN/CGSB 19.13-M87.
WHERE TO USE
- 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.
TYPICAL DATA (Material and curing conditions @ 75°F (24°C) and 50% RH)
|Shelf Life:||Cartridge and Sausage: 12 months in original, unopened packaging.
Pail and Drum: 6 months in original, unopened packaging.
|Storage:||Store at 40°-95°F (4°-35°C).|
|Product Conditioning:||Condition materialto 65°-75°F before using.|
|Colors:||White,colonial white, aluminum gray, limestone, black, dark bronze, capitoltan, stone and medium bronze. Special architecturalcolors on request.|
|Application Temperature:||40° to 100°F. Sealant should be installed when joint is at mid-range of its anticipated movement.|
|Service Range:||-40° to 170°F|
|Curing Rate||Tack-free time 3 to 6 hours
Tack-free to touch 3 hours
|Full Cure:||to 7 days|
|Tear Strength (ASTM D-624):||55 lb./in.|
|Shore A Hardness (ASTM C-661):||21 day 45±5|
|Movement Capability (ASTM C-719):||35%|
|Tensile Properties (ASTM D-412):|
|21 day Tensile Stress
Elongation @ Break
Stress @ 100%
|175 psi (1.21 MPa)
85 psi (0.59 MPa)
|Adhesion in Peel (TT-S-00230C, ASTM C 794):|
|Substrate Peel Strength Adhesion Loss||Concrete 20 lb. 0%
Aluminum 20 lb. 0%
Glass 20 lb. 0%