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Sika-Sikaflex-NP-1-Cartridge

Sika Sikaflex NP 1 Tan 10oz Cartridge

Sika Sikaflex 2C NS Arctic Tint Base 1.5 Gallon Unit 531591

Sika Sikaflex 2C NS Arctic Tint Base 1.5 Gallon Unit 531591

Sika Sikaflex NP 1 White 10.1oz Cartridge

Sikaflex NP1 is a one-component, high-performance, non-priming, gun-grade, elastomeric polyurethane sealant. It requires no mixing and typically requires no priming to bond to many materials, including concrete and masonry.

  • Weather resistant for long-lasting weather tight seals
  • Joint movement capability ±35% provides excellent flexibility
  • Compatible with non-rigid coatings and can be painted
$6.26
Availability: In stock ( 132 Available )
Orders over $300 Ship Free!
SKU
20674

Sika Sikaflex NP 1 – High-Performance Polyurethane Sealant

Sikaflex NP 1 is a one-component, gun-grade polyurethane sealant designed for durable, long-lasting joint sealing in construction applications. This high-performance elastomeric sealant provides excellent flexibility, superior adhesion to most building materials, and outstanding weather resistance. Sikaflex NP 1 cures to a tough, rubber-like consistency, making it ideal for sealing expansion joints, window perimeters, aluminum curtain walls, precast units, and masonry applications. With ±35% joint movement capability and no need for priming in most cases, Sikaflex NP 1 simplifies installation while ensuring a strong, weatherproof seal.


Key Features:

  • One-component polyurethane sealant – no mixing required
  • Excellent adhesion to concrete, masonry, aluminum, wood, and natural stone
  • ±35% movement capability for superior flexibility
  • Weather-resistant and UV-stable for long-term durability
  • Paintable with water-, oil-, and rubber-based paints
  • Ideal for expansion joints, perimeter sealing, and façade applications
  • Meets ASTM C920, TT-S-00230C, and other major performance standards
  • Available in multiple colors to match various construction needs

Technical Specifications:

Property Value
Shelf Life 12 months in original, unopened container
Storage Temperature 40°F – 95°F (4°C – 35°C)
Shore A Hardness 25 – 30 (ASTM C661)
Tensile Strength 150 psi (ASTM D412)
Elongation at Break 800% (ASTM D412)
Adhesion in Peel 30 pli (ASTM C794)
Service Temperature -40°F to 180°F (-40°C to 82°C)
Tack-Free Time 3 to 6 hours
Full Cure Time 7 days

Frequently Asked Questions:

What surfaces can Sikaflex NP 1 adhere to?
Sikaflex NP 1 bonds well to concrete, masonry, aluminum, wood, stucco, and natural stone without primer.

Can Sikaflex NP 1 be used in submerged conditions?
Yes, it is suitable for water immersion when used with the appropriate primer.

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

How long does it take for Sikaflex NP 1 to fully cure?
It becomes tack-free in 3 to 6 hours and reaches full cure in 7 days.

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

More Information
BrandSika
ColorWhite
Size10oz
ManufacturerSika