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Sika Sikaflex 2C SL 1.5 Gal Limestone 91026
Sikaflex 2c SL is a 2-component, premium-grade, polyurethane-based, elastomeric sealant intended for use in all working joints with a minimum depth of 1/4 inch.
- True self-leveling properties.
- Capable of ±50% joint movement.
- Chemical cure allows the sealant to be placed in non-moving joints exceeding 1/2 in. in depth
$69.12
Availability:
In stock
( 65 Available )
Orders over $300 Ship Free!
SKU
17715
Sika Sikaflex-2C SL – 1.5 Gallon (Limestone)
Sikaflex-2C SL is a two-component, premium grade, self-leveling polyurethane elastomeric sealant. It offers high elasticity, ±50 % joint movement capacity, excellent adhesion without primer in many cases, and a chemically curing system that performs well under harsh conditions. The pre-pigmented Limestone color gives consistent finish without needing a separate Color-Pak. Ideal for horizontal working joints, submerged applications, and where durability & flexibility are required.
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Key Features
- Two-component, self-leveling polyurethane elastomeric sealant.
- Meets ASTM C-920 Type M, Grade P, Class 25; TT-S-00227E Type 1, Class A.
- Movement capability ±50 % of average joint width.
- True self-leveling consistency, ideal for horizontal joints.
- Handles temperature extremes – minus 40 °F to approx. 170 °F.
- Excellent adhesion to many substrates; often used without primer.
- Available in 35 architectural colors; pre-pigmented Limestone special case.
- Resistant to water, diluted acids, alkalines; good weathering & UV stability.
Applications
- Horizontal working joints in concrete slabs, parking decks, and roadways.
- Submerged or wet joints such as canals, reservoir structures.
- Expansion and contraction joints in industrial floors.
- Joints exposed to vehicle traffic, chemical splash zones, or jet fuel.
- Use where pre-pigmented color consistency is required (Limestone).
- New construction & infrastructure expansion joint sealing.
Technical Specifications
| ASTM / Federal Spec | ASTM C-920 Type M, Grade P, Class 25; TT-S-00227E Type 1, Class A |
| Elongation at Break (ASTM D-412, 21 days / 73 °F / 50 % RH) | ≈ 650 % |
| Tensile Strength (ASTM D-412) | ≈ 175 psi at 21 days under standard conditions |
| Hardness (Shore A, ASTM D-2240) | ≈ 35 ± 5 |
| Service Temperature Range | −40 °F to +170 °F (−40 °C to 77 °C) |
| Tack-Free Time | 6-8 hours at 73 °F, 50 % RH |
| Final Cure Time | 3 days under standard conditions |
| Shelf Life | 18 months in unopened containers |
| Minimum Joint Depth | ¼ inch |
| Packaging | 1.5 gal unit; 3 gal unit also available |
Frequently Asked Questions
What joint movement can Sikaflex 2C SL handle?
Up to ±50 % joint movement of the average joint width.
Is primer required?
Generally not required unless for submerged or immersion conditions.
What is the recommended temperature range for application?
40 °F to 100 °F (4 °C to 38 °C); condition material to mid-range before use.
How long until final cure?
Approximately 3 days under standard conditions (73 °F, 50 % RH).
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