Sikaflex®-1A is a premium-grade, high-performance, moisture-cured, 1-component, polyurethane-based, non-sag elastomeric sealant. Sikaflex-1a can be used in green and damp concrete applications. Meets Federal Specification TT-S-00230C, Type II, Class A. Meets ASTM C920, Type S, Grade NS, Class 35, Use T, NT, O, M, A, I. Canadian standard CAN/CGSB 19.13-M87.
Usage
-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 applictions, 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
-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.
Typical Properties
Cure Time |
4 to 7 days (73 °F / 50 % r.h.) |
Curing Rate |
up to 1/8" after 24 hours (73 °F / 50 % r.h.) |
Tack Free Time |
3 to 6 hours (73 °F / 50 % r.h.) |
Shore A Hardness |
(21 day) 45±5 |
Movement Capability |
±35 % |
Service Temperature |
−40 °F to +170 °F |
Tear Strength |
55 lb./in. |
Color
White, colonial white, aluminum gray, limestone, black, dark bronze, capitol tan, stone and medium bronze. Special architectural colors on request.
