Demag
Closing plug for Demag AC80-1
This closing plug is designed for use in Demag AC80-1 mobile cranes to seal openings in housings, reservoirs, or hydraulic and pneumatic systems. It prevents fluid leakage and keeps contaminants such as dust and moisture out of the internal components.
Parts diagram
Compatible models
Specifications
- Part number
- 004 381 98
- Brand
- Demag
The closing plug, part number 004 381 98, serves as a sealing component for the Demag AC80-1 mobile crane. It is installed to secure various access points, drain ports, or system openings, ensuring that the internal environment of the machine remains protected from external debris and that fluids are contained within their respective circuits.
This component is compatible with the Demag AC80-1 model. It is designed to fit specific threaded openings to maintain the integrity of hydraulic, pneumatic, or fluid storage systems. Proper installation ensures that the system remains pressurized and free from environmental contaminants that could otherwise compromise machine operation.
Closing plugs are used throughout heavy machinery to seal unused ports or maintenance access points. By providing a secure barrier, they prevent the loss of hydraulic oil, coolant, or air pressure, which is necessary for the consistent performance of the crane's various mechanical and hydraulic assemblies.

