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    MasterSeal NP 2

    A multi-component, polyurethane sealant​

    How does MasterSeal ​NP 2 work?

    MasterSeal NP 2 (formerly known as Sonolastic NP 2) is a multi-component, highly flexible, non-priming, high-performance polyurethane sealant.​

    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 feature​s 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

    US / Canada Product Inform​​ation

    Data Guide

    Data Guide (French)

    Data Guide (Spanish)

    Certification Letter

    LEED Letter

    LEED v4 Letter

    Safety Data Sheets​ (SDS):

    MasterSeal NP 2 - A​​​ctivator

    MasterSeal NP 2 - Alumin​​um Gray

    MasterSeal NP 2 - finPAR​​T Ab

    MasterSeal NP 2 - Lime​​​stone

    MasterSeal NP 2 - Pig Sp​c Disp

    MasterSeal NP 2 - Pre ​​Gray

    MasterSeal NP 2 - Preti​nt Precast Gray

    Canada - French

    Direct contact

    Master Builders Solutions Technical Support

    Construction Systems


    Safety Data Sheet (SDS)

    Find all available safety data sheets for this product.

    Product Certifications

    Generate a free certificate of conformance for a specific BASF construction product.

    Related Literature

    Certification Letter

    pdf (55.41 Kb)

    Data Guide

    pdf (77.74 Kb)

    Data Guide (French)

    pdf (305.55 Kb)

    Data Guide (Spanish)

    pdf (134.00 Kb)

    Guide Spec

    doc (113.47 Kb)

    Joint Sealants Brochure - Spanish

    pdf (749.31 Kb)

    LEED Letter

    pdf (73.42 Kb)

    LEED v4 Letter

    pdf (70.00 Kb)


    pdf (54.99 Kb)

    Sealant Performance Selection Guide

    pdf (872.11 Kb)

    zip (56.48 Kb)