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Sika Sikaflex 2C NS Arctic Limestone 1.5 Gallon Unit 581279
Sikaflex-2c NS Arctic is a two-component non-sag polyurethane sealant in a Limestone 1.5 gallon unit for cold-weather joints down to 15 F. It holds ±50% movement and stays mixable and toolable without preheating for winter envelope work.
- Mixes and tools down to 15 F without preheating
- ASTM C-920 Class 25 with ±50% movement capability
- Limestone architectural color in a 1.5 gallon unit
$94.56
Availability:
Out of stock
Sikaflex-2c NS Arctic
Sikaflex-2c NS Arctic is a two-component, premium-grade, non-sag polyurethane elastomeric sealant formulated for cold-weather joint work down to 15 F without preheating. This Limestone 1.5 gallon unit (part 581279) meets ASTM C-920 Type M, Grade NS, Class 25 with ±50% movement and stays workable for vertical and horizontal joints, submerged canal work, and EIFS. At 73 F pot life is approximately 1 hour with tack-free in approximately 1 hour; at 15 F pot life stretches to approximately 5 hours.
Key Features
- Two-component non-sag polyurethane elastomeric sealant
- Formulated for cold-weather placement down to 15 F
- Meets ASTM C-920 Type M, Grade NS, Class 25, Use T, NT, M, G, A, O
- Capable of ±50% joint movement
- Limestone pre-tinted 1.5 gallon unit
- Exceptional cut and tear resistance with paintable cured surface
Applications
- Works in properly designed working joints with minimum 1/4 in depth
- Vertical and horizontal cold-weather joint sealing
- Submerged canal and reservoir joints
- Exterior Insulation Finish Systems (EIFS) perimeter seals
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex-2c NS Arctic |
| Part no. | 581279 |
| Unit | 1.5 gallon |
| Color | Limestone |
| Chemistry | Two-component non-sag polyurethane |
| ASTM | C-920 Type M, Grade NS, Class 25 |
| Movement | ±50% |
| Tensile / elongation at 73 F | 73 psi / 540% |
| Apply temp | 15 to 50 F |
| Pot life at 73 F / 15 F | Approximately 1 h / 5 h |
| Tack-free at 73 F / 15 F | Approximately 1 h / 8 h |
Product documents: Sikaflex-2c NS Arctic Product Data Sheet (PDF)
Frequently Asked Questions
What cold temperature can Sikaflex-2c NS Arctic be mixed and placed at?
It mixes and places down to 15 F without preheating. Ambient and substrate range on the PDS is 15 to 50 F.
What movement capability does Sikaflex-2c NS Arctic hold?
±50% movement under ASTM C-920 Class 25 for properly designed working joints.
What pot life should crews plan for with Sikaflex-2c NS Arctic?
Approximately 1 hour at 73 F and approximately 5 hours at 15 F. Tack-free is approximately 1 hour at 73 F and approximately 8 hours at 15 F.
What color ships in this Sikaflex-2c NS Arctic unit?
Limestone, part 581279. Tint Base units take Color-pak on site when a different architectural color is required.
What joints suit Sikaflex-2c NS Arctic beyond winter walls?
Working joints with at least 1/4 in depth, vertical and horizontal joints, submerged canal and reservoir joints, and EIFS perimeter seals.
What size is the Sikaflex-2c NS Arctic unit on this page?
This page is the Limestone 1.5 gallon unit, part 581279.
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