BASF MasterSeal NP 1 polyurethane sealant, formerly Sonolastic NP 1, is a one-component, high performance, nonpriming, gun-grade, elastomeric polyurethane sealant. NP1 requires no mixing and typically requires no priming to bond to many materials, including concrete and masonry. NP1 polyurethane sealant is ready to use and requires no mixing which reduces labor cost. NP1 polyurethane sealant's joint movement capability is ±35% which allows for excellent flexibility for keeping moving joints tight. Gunning and tooling is easy, when applying NP1 polyurethane sealant, which speeds application while making neater joints.
Interior and exterior
Above and below grade
Immersed in water
Aluminum and wood window frames
Store front assemblies
Clay & concrete roof tiles
Notes: * Do not use in swimming pools or other submerged conditions where the sealant will be exposed to strong oxidizers.