Demag
Stepped seal for Demag AC80-1
This stepped seal is designed for the hydraulic systems of the Demag AC80-1 crane. It functions as a dynamic sealing element to prevent fluid leakage and maintain system pressure.
Parts diagram
Compatible models
Specifications
- Part number
- 420 018 12
- Brand
- Demag
The stepped seal, identified by part number 420 018 12, serves as a dynamic sealing component within the hydraulic and pneumatic circuits of the Demag AC80-1 crane. Its specific geometry is engineered to accommodate reciprocating or rotating movements, ensuring the integrity of the hydraulic system during crane operations. By maintaining a tight seal, this component prevents fluid loss and protects internal assemblies from external contamination, which is necessary for the precise control and power delivery required during lifting tasks.
This component is compatible with the Demag AC80-1 model. It is designed to meet the technical requirements for pressure retention within cylinders and actuators, helping to avoid performance drops and system overheating. Regular inspection and replacement of these seals are standard maintenance procedures to ensure the continued functionality of the crane's hydraulic systems.
In heavy machinery, stepped seals are used to manage fluid containment in dynamic applications. They provide a barrier that holds hydraulic pressure while allowing for the movement of mechanical parts, such as piston rods or rotating shafts, within the hydraulic assembly.

