Close

Login

Please login with your username and password.

Login

Can’t remember your accounts password?

Can't access your account?

Please select your language

This page is available in the following languages:

    Please select your location

    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

    Data Guide

    Certification Letter

    LEED Letter

    LEED v4 Letter

    Safety Data Sheet - NP2 Activator

    Safety Data Sheet - MasterSeal 950 formerly NP2/SL2 Accelerator

    NP2 Standard Stock Color Pack MSDS