O-ring for Demag AC80-1

The O-ring with part number 210 956 40 serves as a mechanical seal within the Demag AC80-1 crane. This toroidal component creates a seal between mating parts to maintain system integrity and prevent the escape of hydraulic fluids or gases. By forming a barrier, it also protects internal systems from external contaminants that could otherwise cause premature wear or operational failure.

This specific seal is compatible with the Demag AC80-1 model. It is used across various assemblies, including hydraulic cylinders, control valves, pumps, and hose connections, where maintaining consistent operating pressure is required for the crane to function correctly. Regular inspection and replacement of these seals are standard maintenance procedures to avoid pressure loss and potential system leaks.

In heavy machinery, O-rings function as static or dynamic seals that compress when installed in a gland or housing. This compression creates the sealing force necessary to contain pressurized fluids within hydraulic and pneumatic circuits. Proper installation ensures the seal remains seated correctly under varying operating conditions.