Flexible couplings are mechanical devices used to connect two shafts while allowing for some degree of misalignment and movement. They help transmit torque and rotational motion between the shafts, accommodating slight variations in alignment due to thermal expansion, vibration, or other factors. This flexibility helps reduce wear and tear on connected components. These couplings come in various designs, including rubber, gear, and disc types, each suited for different applications. By minimizing stress on the shafts and associated machinery, flexible couplings enhance the overall efficiency and longevity of mechanical systems, making them essential in industries like automotive, manufacturing, and aerospace.