Construction Sikaflex ® 1a One part polyurethane, elastomeric sealant/adhesive Description

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Construction

Sikaflex

®

-1a

One part polyurethane, elastomeric 

sealant/adhesive

Description

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; Canadian standard CAN/CGSB 19.13-M87.

Where to Use 

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Designed for all types of joints where maximum depth of sealant will not exceed 1/2 in.

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Excellent for small joints and fillets, windows, door frames, reglets, flashing, common roofing detail ap-

plications, and many construction adhesive applications.

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Suitable for vertical and horizontal joints; readily placeable at 40°F.

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Has many applications as an elastic adhesive between materials with dissimilar coefficients of expan-

sion.

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Submerged conditions, such as canal and reservoir joints.

Advantages 

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Eliminates time, effort, and equipment for mixing, filling cartridges, pre-heating or thawing, and cleaning

of equipment.

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Fast tack-free and final cure times.

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High elasticity - cures to a tough, durable, flexible consistency with exceptional cut and tear-resistance.

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Stress relaxation.

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Excellent adhesion - bonds to most construction materials without a primer.

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Excellent resistance to aging, weathering.

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Proven in tough climates around the world.

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Odorless, non-staining.

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Jet fuel resistant.

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Certified to the NSF/ANSI Standard 61 for potable water.

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Urethane-based; suggested by EPA for radon reduction.

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Paintable with water-, oil- and rubber-based paints.

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Capable of ±35% joint movement.