A Rotary Joint is a mechanical device that allows the transfer of fluids or gases between stationary and rotating parts. It is commonly used in various applications, such as in industrial machinery, robotics, and automotive systems. The design typically includes seals and bearings to prevent leaks and ensure smooth rotation. These joints are essential in systems where continuous rotation is required, such as in printing presses or wind turbines. By enabling the flow of materials while maintaining movement, rotary joints help improve efficiency and functionality in many engineering applications.