Sika Sikaflex 1A Limestone 10oz 91016

Sikaflex 1A is a premium-grade, high-performance, polyurethane-based, non-sag elastomeric sealant. Sikaflex 1A can be used in green and damp concrete applications and is readily placeable at 40°F.

Fast tack-free and final cure times
Excellent resistance to aging, weathering.
High elasticity - cures to a tough, durable, flexible consistency

$6.17

Availability: In stock ( 343 Available )

SKU

17730

Sika Sikaflex-1A – High-Performance, Moisture-Cured Polyurethane Sealant

Sika Sikaflex-1A is a premium-grade, one-component, moisture-cured polyurethane sealant designed for superior flexibility and adhesion in a wide range of construction applications. This non-sag elastomeric sealant bonds to most substrates without a primer and offers outstanding durability in dynamic joints. It can be used for vertical and horizontal joints and is suitable for both interior and exterior applications, including windows, door frames, flashing, and concrete expansion joints. With exceptional cut and tear resistance, Sikaflex-1A is formulated to withstand extreme weather conditions and aging while maintaining its flexibility. It is also certified for potable water applications and offers excellent resistance to jet fuel, making it a versatile choice for sealing projects in commercial and industrial environments.

Key Features:

One-component, moisture-cured polyurethane sealant
Non-sag formula for vertical and overhead applications
Excellent adhesion to most construction materials without primer
Withstands ±35% joint movement
Certified for potable water applications (NSF/ANSI Standard 61)
High cut and tear resistance for durability in extreme conditions
Fast tack-free and final cure times for efficient project completion
Paintable with water-, oil-, and rubber-based paints

Technical Specifications:

Property	Value
Movement Capability	±35% (ASTM C-719)
Tack-Free Time	3 to 6 hours
Final Cure Time	4 to 7 days
Shore A Hardness	45 ±5 (ASTM C-661)
Tensile Strength	175 psi (1.21 MPa) (ASTM D-412)
Elongation at Break	550% (ASTM D-412)
Tear Strength	55 lb./in. (ASTM D-624)
Application Temperature	40°F to 100°F
Service Temperature	-40°F to 170°F

Frequently Asked Questions:

What are the main applications for Sikaflex-1A?
It is designed for vertical and horizontal joints in construction applications, including windows, door frames, reglets, flashing, and concrete expansion joints.

Does Sikaflex-1A require a primer?
No, it bonds to most construction materials without a primer. However, primer may be needed for certain applications or submerged conditions.

Is Sikaflex-1A paintable?
Yes, it can be painted with water-, oil-, and rubber-based paints after full cure.

Can Sikaflex-1A be used in damp conditions?
Yes, it can be applied to green concrete after 24 hours and to damp concrete after 1 hour of drying time.

For the latest technical specifications and application guidelines, visit Sika USA.

More Information