Demag
Seal for Demag AC80-1
This seal is designed for the Demag AC80-1 crane to maintain system integrity at mechanical junctions. It serves as a barrier to prevent fluid leakage and the ingress of external contaminants.
Parts diagram
Compatible models
Specifications
- Part number
- 420 756 12
- Brand
- Demag
The component 420 756 12 functions as a seal within the Demag AC80-1 crane. It creates a barrier between mechanical parts to prevent the escape of hydraulic fluids or lubricants while simultaneously blocking the entry of external contaminants such as dust, dirt, and moisture. By maintaining this separation, the seal preserves the operational integrity of the machine systems, particularly at points of rotation, gear housings, or hydraulic cylinder interfaces.
This component is specified for use in the Demag AC80-1 model. It is engineered to perform under the specific pressure and movement requirements of this crane assembly. Proper installation ensures that the internal systems remain protected from environmental debris and that fluid levels are maintained within the intended circuits.
In heavy machinery, seals of this type are used to isolate internal chambers from the external environment. They are typically placed in locations where shafts, pistons, or housings meet, ensuring that pressurized fluids remain contained and that moving parts are shielded from abrasive particles that could otherwise lead to premature wear or system failure.

