Sikaflex NP1

Sikaflex NP1 is a high-performance, one-component polyurethane sealant designed for reliable, non-priming adhesion to concrete, masonry, and many other materials. Its gun-grade formulation requires no mixing, simplifying application. Ideal for acoustical sealing, it effectively reduces sound transmission by filling gaps around cut-outs and partition perimeters, contributing to high STC ratings. Once cured, it forms a durable, elastomeric rubber that ensures a long-lasting seal for partitions and other construction joints.