Sikaflex Self Leveling Sealant is a single component, self-leveling, premium-grade polyurethane sealant with an accelerated curing capacity. Meets Federal Specification TT-S-00230C, Type 1, Class A. Meets ASTM C-920, Type S, Grade P, Class 25.A Self Leveling sealant with an accelerated curing capacity for sealing horizontal expansion joints in concrete. No tooling required, levels itself. Able to bridge gaps up to 1.5 in.