Curved Tooth Flexible Gear couplings are unique of its kind in the field on Mechanical Power Transmission. These Gear Coupling have outstanding features like mechanical flexibility and compensation of misalignment (Angular, Parallel and axial) of the connected shafts. These can be used extensively in the various industries like Rolling Mills, Cranes, Cement Plants, Dredgers, Conveyors and Elevetors, Rubber Industries, Compressors, Fans, Blowers and in many other industries. These Couplings consist of two halves with external teeth having curved/crowned shape and two outer sleeves with internal spur teeth. Thus the Coupling ensures a greater flexibility because of its well designed tooth profile which allows a maximum area of contact between the external and internal teeth under any mis-aligned condition. Special O rings have been provided at the end of the coupling hubs to prevent any leakage of the lubricant and entry of dust inside coupling. They are made of special Steels desired for the purpose of efficient working and for better life.