Description
Sikaflex-1a is a premium-grade, high-performance, moisture-cured, 1-component, polyurethane-based, non-sag elastomeric sealant made to seal joints around windows, door frames, flashings and much more.
This sealant meets 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.
ADVANTAGES
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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) 550% 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% |
| Weathering Resistance: | Excellent |
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