Disc couplings are mechanical devices used to connect two shafts while allowing for some misalignment. They consist of two hubs and a flexible disc that absorbs shock and vibration, making them ideal for various applications in machinery. Their design helps to transmit torque efficiently while minimizing wear and tear on the components. These couplings are commonly found in industries such as automotive, aerospace, and manufacturing. They are particularly useful in systems where precise alignment is challenging, as they can accommodate angular, parallel, and axial misalignments without compromising performance.