Webb Vacuum Furnaces makes two high temperature furnaces for a wide variety of applications. The RD-G furnace is five furnaces in one: a sintering furnace for high temperature carbide, nitride, and boride ceramics; an annealing furnace for ceramics, composites and other refractory materials; an extreme high temperature furnace for material processing; a high vacuum furnace for reactive metal processing; a general laboratory furnace that performs material processes.