A Diaphragm Coupling is a high-performance mechanical coupling used to connect two rotating shafts while transmitting torque efficiently and compensating for misalignment. It uses one or more flexible metal diaphragms (thin metallic membranes) instead of elastomer elements, allowing precise torque transmission with high reliability and minimal maintenance. Diaphragm couplings are widely used in turbomachinery, pumps, compressors, generators, and heavy industrial equipment.