Sika Sikaflex 1A White 20oz Sausage 91008

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.

Exceptional cut and tear resistance
Fast tack-free and final cure times
High elasticity - cures to a tough, durable, flexible consistency

$11.49

Availability: In stock ( 492 Available )

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SKU

17937

Details

Sikaflex-1a – White – 20oz Sausage

Sikaflex-1a is a premium-grade, one-component polyurethane sealant designed for both vertical and horizontal joint applications. It provides strong adhesion, long-term elasticity, and reliable performance even in green or damp concrete conditions. Sikaflex-1a meets the requirements of ASTM C920 and Federal Specification TT-S-00230C, making it suitable for demanding industrial and construction environments. The white 20oz sausage format allows for easy application in professional-grade installations where flexibility, durability, and adhesion are critical.

Key Features:

One-component, moisture-cured polyurethane sealant
±35% movement capability for dynamic joints
Adheres to most construction materials without primer
Non-sag consistency for vertical and overhead joints
Can be applied to green concrete (24 hrs) and damp concrete (after 1 hr)
Fast tack-free time: 3 to 6 hours
Jet fuel resistant and suitable for potable water contact
Paintable with water-, oil-, and rubber-based coatings

Technical Specifications:

Property	Value
Movement Capability	±35%
Tack-Free Time	3–6 hours @ 73°F (50% RH)
Curing Rate	Up to 1/8" per 24 hours
Elongation at Break	550%
Tensile Strength	175 psi (21 day)
Tear Strength	55 lb/in
Shore A Hardness	45 ± 5
Service Temperature	−40°F to +170°F
Coverage (20oz sausage)	24.1 ft at ½" x ½"
Certifications	ASTM C920, TT-S-00230C, NSF/ANSI 61

Frequently Asked Questions:

Can Sikaflex-1a be applied to damp or green concrete?
Yes, it can be applied to green concrete after 24 hours and to damp concrete after 60 minutes of drying time.

What is the working temperature range for application?
Recommended application temperatures are between 40°F and 100°F. Store and condition material at 65–75°F prior to use.

Is Sikaflex-1a paintable?
Yes, it can be painted with water-, oil-, and rubber-based paints after curing. Allow at least 7 days cure time before painting.

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