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    MasterSeal NP 2

    Multi-component high performance polyurethane sealant

    Formerly: Sonolastic NP 2

    How does MasterSeal NP 2 work?

    MasterSeal 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.

    Recommended uses:

    • 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
    • Parking structures

    What are the unique features of MasterSeal NP 2?

    • Wide temperature application range makes MasterSeal NP 2 suitable for all climates
    • 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
    • Bulk packaging results in less waste
    • Formulated to withstand pedestrian and vehicular traffic

    What are the benefits of MasterSeal NP 2?

    • Joint movement capability ±25% provides excellent flexibility for keeping moving joints weather tight
    • Weather resistant for long-lasting weather tight seals
    • Easy to gun and tool to speed up application and make neater joints
    • No primer required for most construction materials, lowering installation costs
    • Chemical cure allows for faster turnaround time
    • Long pot life provides extended working time

    Product Information

    Certification Letter

    LEED v4 Letter

    Safety Data Sheet - NP2 Activator

    Safety Data Sheet - MasterSeal 950 formerly NP2/SL2 Accelerator

    NP2 Standard Stock Color Pack MSDS