CS-309 is a colourless transparent curing and sealing compound formulated from acrylic polymers and quick-evaporating solvents. When applied on freshly placed concrete, it forms a tough, uniform, moisture-retentive film, which simultaneously cures and seals the concrete. CS-309 meets the 350 g/L VOC limit for concrete curing compounds.

CS-309 is used for curing and sealing newly placed concrete in commercial and industrial applications, such as floors, sidewalks, service stations, multi-level parking decks, and driveways.