This Self-Leveling Sealant is a single component, self-leveling, premium-grade polyurethane sealant with an accelerated curing capacity. This Self-Leveling Sealant meets Federal Specification TT-S-00230C, Type 1, Class A. Meets ASTM C-920, Type S, Grade P, Class 25. Always refer to the Current Product Data Sheet and MSDS for detailed performance specifications before use. If you are having issues with weeds and vegetation growing in-between your sidewalk joints or lifting sidewalk slabs due to winter freeze/thaw cycles, look no further.