PENCURE OTC is a unique, dual-action, non-yellowing, acrylic, concrete curing and sealing compound containing silane. PENCURE OTC is intended for use on fresh concrete only. The product is clear, transparent, and easy to apply. PENCURE OTC simultaneously forms a membrane for optimum moisture retention; its unique formulation, containing silane, also allows the product to chemically react and reduce the intrusion of water and salts into the concrete.