PLUG - CUP (Doosan DWD700390)

A damaged cup plug can allow fluid or debris to enter a sealed cavity, leading to internal contamination or pressure loss. The Doosan catalog reference DWD700390 identifies this aftermarket replacement part as a PLUG - CUP. Its plain mechanical function is to seal an opening in a casting or housing, preventing leakage. A concrete generic failure consequence is that a worn or missing cup plug may cause gradual fluid seepage, resulting in low lubricant levels and eventual component wear. During routine service, a cup plug should be inspected for cracks or deformation that compromise its seal. Verify the serial number or application, then call (562) 693-7748. This part is an aftermarket replacement sourced from the Doosan catalog.

Part number variants: DWD700390, dwd700390