Sika Sikaflex 1a is a premium-grade, solvent-free, 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 C-920, Type S, Grade NS, Class 35, use T, NT, O, M, G, I.

Applications
Specifically formulated to be used in joints where concrete has only been placed for 24 hours or in damp concrete applications.
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 degrees.
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, tear-resistant. Excellent adhesion - bonds to most construction materials without a primer. Apply to green concrete 24 hours after pouring. Jet fuel resistant. Certified to the NSF/ANSI Standard 61 for potable water. Paintable with water-, oil- and rubber-based paints. Capable of ±35% joint movement.

See datasheet for full specifications. Requires applicator gun.

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