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    MasterSeal  NP 1 - One-component, elastomeric, gun-grade polyurethane sealan

     Sonolastic NP 1


    MasterSeal 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.

    Where is MasterSeal NP1 applied?

    • 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 
    • Store front assemblies

    What are the advantages of MasterSeal NP1?

    • 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 jobsite waste, lowering disposal costs 
    • 12 standard colors to match a wide variety of common substrates 
    • No primer required for most construction materials lowering installation costs 
    • Weather resistant for long-lasting weathertight seals 
    • Wide temperature application range makes MasterSeal 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

    Product Information

    Technical Data Sheet


    MasterSeal NP 1 TDS

    pdf (371,82 Kb)

    Info & price request

    Address: Cairo Festival City, Building A1 Business District, 1st Floor 11835 Cairo, Egypt​

    Hotline Phone: 15560​