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    MasterSeal SL 2

    Multi-component self-leveling polyurethane sealant

    Formerly: Sonolastic SL 2

    How does MasterSeal SL 2 work?

    MasterSeal SL 2 is a multi-component, self-leveling, elastomeric polyurethane sealant that is mixed and poured in place. When cured, it forms a tough, resilient joint seal that resists penetration and abrasion and remains flexible when exposed to weather and aging.

    Recommended uses:

    • Horizontal
    • Interior and exterior
    • Expansion joints
    • Control joints
    • Pavers
    • Plaza decks
    • Industrial floors
    • Driveways/garages
    • Sidewalks
    • Decks
    • Parking structures
    • Pitch pans

    What are the unique features of MasterSeal SL 2?

    • Wide temperature-application range makes MasterSeal SL 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 SL 2?

    • Abrasion resistant to help handle pedestrian and vehicular traffic
    • Joint movement capability ±25% provides excellent flexibility for keeping moving joints weather tight
    • Weather resistant, producing long-lasting weather tight seals
    • Easy to gun and tool, speeding up application and making neater joints
    • MasterSeal 905 accelerator available for use in cold climate applications to help speed initial cure
    • No primer required for most construction materials, lowering installation costs
    • Long pot life offers extended working time
    • Chemical cure allows for faster turnaround time

    Product Information

    Data Guide

    Certification Letter

    LEED v4 Letter

    SL 2 Pretint Material Safety Data Sheets

    SL 2 Tintbase Material Safety Data Sheets

    SL2 Activator Safety Data Sheets

    MasterSeal 905 formerly SL2 Accelerator Safety Data Sheets

    Standard Color Pack Material Safety Data Sheets