Sikaflex® NP 1

Sikaflex® NP 1(formerly MSeal NP 1) ONE COMPONENT, ACOUSTIC SOUND DAMPING, ELASTOMERIC, GUN GRADE POLYURETHANE SEALANT Sikaflex NP 1 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. Used as an acoustical sealant, Sikaflex NP 1 reduces sound transmission in partition systems to support high STC values by

(formerly MSeal NP 1)

ONE-COMPONENT, ACOUSTIC/SOUND DAMPING, ELASTOMERIC, GUN-GRADE POLYURETHANE SEALANT

Sikaflex® NP 1 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. Used as an acoustical sealant, Sikaflex® NP 1 reduces sound transmission in partition systems to support high STC values by sealing spaces around cut-outs and at perimeters of partitions. The sealant cures to a tough rubber to form a long-lasting acoustical seal.

• One-component formula  requires no mixing, helping to reduce labor costs
• Joint movement capability ±35% provides excellent flexibility for keeping moving joints weathertight
• Easy to gun and tool, speeding up application and making neater joints

Usage

• Interior and exterior
• Above and below grade
• Immersed in water
• Expansion joints
• Panel walls
• Precast units
• Aluminum and wood window frames
• Roofing
• Fascia
• Parapets
• Vinyl siding
• Storefront assemblies

Substrates

• Concrete
• Masonry
• Aluminum
• Wood
• Clay & concrete roof tiles
• Stucco
• Natural stone  

Advantages

• One-component formula  requires no mixing, helping to reduce labor costs
• Joint movement capability ±35% provides excellent flexibility for keeping moving joints weathertight
• Easy to gun and tool, speeding up application and making neater joints
• Available in ProPaks, reducing job site waste and lowering disposal costs
• 12 standard colors to match a wide variety of common substrates
• No primer is required for most construction materials, lowering installation costs
• Weather resistant for long-lasting weathertight seals
• Wide temperature application range makes Sikaflex® NP 1 suitable for all climates
• Compatible with non-rigid coatings and  can be painted
• Superior holding power for long-lasting roof tile installation
• UL listed; Passes 4–hour, 4–inch, fire and hose stream test when used with Ultra Block or mineral wool
• Suitable for water immersion with documented performance in wet areas
• Meets VOC requirements in all 50 states
• Can adhere to green concrete up to 72 hours after pour
• Can be used as an acoustic sealant  to increase system STC value
• Minimizes sound transfer and supports high STC ratings

Packaging

• 300 ml (10.1 fl oz) cartridges, 30 cartridges per carton, and 12 cartridges per carton
• 590 ml (20 fl oz)  ProPaks,  20 per carton

Color

White, Off-White, Limestone, Stone, Tan, Aluminum Gray, Medium Bronze, Special Bronze, Redwood Tan, Black, and Gray.

For color availability in bulk packaging, call Customer Service.

Product Details

APPROVALS / STANDARDS

• ASTM C 920, Type S, Grade NS, Class 35, Use NT, M, A, T, O* and I
• Federal Specification TT-S- 00230C, Type II, Class A
• Corps of Engineers CRD-C- 541, Type II, Class A
• Canadian Specification CAN/CGSB-19.13-M87, Classification MCG-2-25-A-N, No. 81026
• CFI accepted
• Underwriters Laboratories Inc.® classified (fire resistance only)
• ISO 11600-F-25LM • STC (sound transmission class)

* Refer to substrates in Uses