National Rule VOC-compliant, scratch-resistant Permasolid HS Diamond Clear Coat 8450 combines durable vehicle refinish with easy application. It offers the ability to resist everyday aggression and meets the current needs of car manufacturers such as Daimler Chrysler. Hardener (Permasolid VHS Hardener 3240) is added in a mixing ratio of 3:1, followed by one- or two-coat application. It provides excellent flow and leveling and, if needed, may be polished. Complete curing takes place at an object temperature of 140° F/60° C in 30 to 35 minutes.