CS-309-OTC acrylic concrete curing and sealing compound is an acrylic polymer solution. In addition to regular concrete, the product can also be used for decorative concrete needs. CS-309-OTC provides a tough, clear film that will not after-yellow. It also provides improved weather and stain resistance, combined with a dustproof sealer. CS-309-OTC is used on driveways, patios, loading docks, swimming pool areas, and exposed aggregate, as well as any exterior decorative surface where enhanced appearance, protection, and sealing of concrete is desired (dries to a low-medium sheen).