Quadring seal for Demag AC80-1

The quadring seal, also known as an X-ring, is a specialized sealing element used to maintain system integrity within the Demag AC80-1 crane. Featuring a distinct X-shaped cross-section, this component offers an increased sealing surface area compared to standard O-rings. This geometry helps the seal resist extrusion and twisting during operation, ensuring a consistent seal in both dynamic and static applications.

This part is compatible with the Demag AC80-1 model. It is identified by part number 762 980 73. The component serves to contain hydraulic or pneumatic fluids and prevent the ingress of external contaminants into critical crane systems, which is necessary for maintaining operational pressure and efficiency.

Quadrings are commonly employed in heavy machinery to provide sealing solutions where traditional circular seals may be prone to rolling or spiraling. By providing multiple contact points along the sealing interface, they effectively manage pressure differentials and support the long-term functionality of hydraulic cylinders, valves, and other fluid-power assemblies within the machine.