​​MasterSeal NP 2 1.5 GAL


MasterSeal NP 2
A multi-component, polyurethane sealant

MasterSeal NP 2 (formerly Sonolastic NP 2) operates as a multi-component, highly flexible, non-priming, high-performance polyurethane sealant. It effectively seals gaps and joints to prevent water infiltration and ensure long-lasting protection.

Product Data Sheet

Recommended uses:

  • Interior and exterior applications
  • Above and below-grade installations
  • Suitable for areas immersed in water
  • Ideal for expansion joints, panel walls, precast units, aluminum and wood window frames, roofing, fascia, parapets, vinyl siding, store front assemblies, and parking structures

Unique features of MasterSeal NP 2:

  • Wide temperature application range makes it 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

Benefits of MasterSeal NP 2:

  • Joint movement capability of +/- 25% provides excellent flexibility, ensuring weather-tight seals in moving joints
  • Weather-resistant for long-lasting weather-tight seals
  • Easy to gun and tool, speeding up application and making 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


Additional information

Dimensions 1 × 1 × 1 in