Sikaflex-1c SL is a single component, self-leveling, premium-grade polyurethane sealant with an accelerated curing capacity. Meets Federal Specification TT-S-00230C, Type I, Class A. Meets ASTM C-920, Type S, Grade P, Class 25, use T, M, A, G, I. Sikaflex-1c SL is used to seal horizontal expansion joints in concrete and cementitious slabs such as: Sidewalks, Balconies, Pavements, Terraces, Warehouses, Factories Civil Structures, Plazas, Pitch Pans.