Pyro-Paint 634-ALP from Aremco Products is a new high-temperature ceramic coating used to insulate and seal dense refractory bricks used in high-temperature furnaces and kilns to 3200°F. It can improve the reliability of the brick and protect the metal shell from corrosion. Pyro-Paint 634-ALP is an inert, chemically resistant, inorganic material that will not outgas or decompose in high-temperature corrosive applications.