Sikaflex Crack Flex Sealant, Gray, 10,1 Fl Oz, High Performance, Self-Leveling, Sikaflex Crack Flex Sealant is a single component, textured, self-leveling, premium grade polyurethane sealant for permanently sealing horizontal cracks. It can be used in cracks up to 1 in. wide and provides long term durability. Its elastic technology formulation allows the sealant to remain flexible and move with the crack. Ready-to-use premium quality sealant with elastic technology allowing for crack movement PERFORMANCE: Self-leveling, waterproof and textured to be blended with concrete surface. SUPPORTS: Concrete and cementitious slabs, such as: driveways, garages, sidewalks, balconies, pavements, terraces, decks, walkways, steps. DURABILITY: Resists aging and weathering. USES: Use with standard caulk gun to seal horizontalcracks up to 1 in. (38.1 mm) wide. Can be painted with water-based, oil-based or rubber-based paints.