Demag
Closing plug for Demag AC80-1
This closing plug is designed for use in the Demag AC80-1 mobile crane to seal various system ports. It prevents fluid leakage and keeps contaminants out of hydraulic circuits, gearboxes, or fluid reservoirs.
Parts diagram
Compatible models
Specifications
- Part number
- 313 283 99
- Brand
- Demag
The closing plug, part number 313 283 99, serves as a critical sealing component for the Demag AC80-1 mobile crane. This component is used to secure openings within hydraulic systems, transmissions, gear housings, and fluid reservoirs. By providing a tight seal, it prevents the loss of internal fluids and protects the system from the ingress of external contaminants, ensuring that circuits maintain their required pressure and cleanliness levels.
This plug is typically installed at drainage points, filling ports, inspection windows, or test ports where a secure closure is necessary. It is engineered with precise threading and a dedicated sealing surface to accommodate a gasket or washer, ensuring a leak-free interface. Proper installation is necessary to maintain the integrity of the machine's fluid systems and to prevent potential performance issues or environmental hazards caused by leaks. This component is compatible with the Demag AC80-1 crane model.
Closing plugs are standard components in heavy machinery used to isolate internal fluid systems. They allow technicians access for maintenance, such as oil changes or system pressure testing, while ensuring that the system remains completely sealed during normal operation.

