Sika Sikaflex NP 2 Limestone 1.5 Gallon

Sikaflex NP 2 is a multi-component, highly flexible, non-priming, high performance polyurethane sealant. It has been successfully tested for joint movement of ±25%. It can be tinted to multiple colors.

Weather resistant for long-lasting weather tight seals
Joint movement capability +/- 25%
Long pot life provides extended working time

$69.23

Availability: Out of stock

SKU

20688

Sika Sikaflex NP 2 – Multi-Component Polyurethane Sealant (1.5 Gallon Kit)

Sika Sikaflex NP 2 is a multi-component, high-performance polyurethane sealant designed for flexibility, durability, and reliability in both interior and exterior construction joints. Offering ±25% movement capability, Sikaflex NP 2 performs exceptionally well in dynamic joints and extreme environmental conditions. It is suitable for use in expansion joints, precast and panel walls, window frames, roofing, fascia, and submerged conditions. The sealant cures chemically, making it ideal for applications requiring quick turnaround. With no primer required for most substrates, low sagging, and compatibility with a wide variety of building materials, Sikaflex NP 2 is a trusted choice for commercial and industrial sealing projects.

Key Features:

Multi-component polyurethane formula with chemical cure for fast turnaround
±25% movement capability for dynamic and structural joints
Non-sag formula for vertical and overhead applications
No primer required for most construction materials
Excellent weather resistance and long-lasting weathertight seals
Paintable and tintable with 40+ standard color options
UL listed for 4-hour fire resistance when used with mineral wool or Ultra Block
Suitable for both above- and below-grade applications, including water immersion

Applications:

Expansion and control joints
Precast concrete and panel wall joints
Aluminum, vinyl, and wood window frame perimeters
Roofing, fascia, parapets, and vinyl siding joints
Storefront and curtain wall assemblies
Parking structures and traffic-grade joint applications
Water-immersed and below-grade joints with appropriate primers

Technical Specifications:

Property	Value
Movement Capability	±25%
Tensile Strength	160 psi (ASTM D412)
Elongation at Break	280% (ASTM D412)
Shore A Hardness	25 (ASTM C661)
Service Temperature	-40°F to 180°F (-40°C to 82°C)
Tack-Free Time	<48 hours (ASTM C679)
Application Temperature	40°F to 95°F (4°C to 35°C)
Packaging	1.5 Gallon Kit in 2-Gallon Pail

Frequently Asked Questions:

Is Sikaflex NP 2 suitable for submerged or wet applications?
Yes, Sikaflex NP 2 can be used in immersed applications when properly cured and primed according to guidelines using Sika Primer-173.

Can this sealant be painted?
Painting is possible but must be tested on-site for compatibility. Rigid paints may crack due to sealant movement.

What colors are available for Sikaflex NP 2?
It is available in 40 pre-tinted standard colors, including precast gray and limestone. Custom colors are possible with Sikaflex-900 color packs.

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