DEUBLIN 357-000-002083 ROTARY UNION - 1"-11.5 NPT Rotor Connection This was installed on a section of a web lamination line that was never put into service. It was however stored for the last year and a half in a rigger's warehouse where it did come in contact with water over spray mist from them washing their equipment. That would be the cause of the slight corrosion to the outside of the union. There is also some tape residue on the rotor connection nut. Mechanically it's 100% unused.