MasterSeal NP 1 (formerly known as Sonolastic NP 1) is a one-component, high-performance, non-priming, gun-grade, elastomeric polyurethane sealant. It requires no mixing and typically requires no priming to bond to many materials, including concrete and masonry. Used as an acoustic sealant, MasterSeal NP 1 reduces sound transmission in partition systems to support high STC values by sealing spaces around cut-outs and at perimeters of partitions.

Features

• Wide temperature application range makes MasterSeal NP 1 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 areass

300 mL tube