flex 1a Flexible Non Sag High Performance Polyurethane Concrete Masonry Sealant for Vertical and Horizontal Surfaces. Half Case - 10 20oz Tubes. White

Sikaflex-1A is a top-tier, high-performance, moisture-cured, single-component, polyurethane-based, non-sag elastomeric sealant. It is suitable for green and damp concrete applications. This product conforms to Federal Specification TT-S-00230C, Type II, Class A. It also meets ASTM C-920, Type S, Grade NS, Class 35, for use T, NT, O, M, G, I, A. Additionally, it complies with the Canadian standard CAN/CGSB 19.13-M87