flexible coupling / flange
The S-Flex series is a line of flexible couplings engineered by Unipower. It is equipped with two flanges, and one elastomeric sleeve with external teeth.
The unit transmits torque across the flanges by means of the sleeve. The sleeve features a shear deflection that absorbs misalignment and torsional shock loads. The device operates through attaching a flange to the respective shaft of the driver.