The GRACO WMC51C1 THERM-O-FLOW SUPPLY UNIT is a robust, high-precision supply system designed for the controlled delivery of sealants and adhesives in industrial environments. It is constructed from durable materials such as electroless nickel-plated ductile iron, EPDM, PTFE-coated aluminum, 6061 aluminum, Buna, Viton, zinc-plated steel, and 316/17-4 stainless steel. Its primary function is to supply and condition warm melt materials for automated or manual dispensing in demanding applications.