Rotary joint

Rotary joint may refer to:


 * Coupling, a mechanical device used to connect two shafts together at their ends for the purpose of transmitting power, including flexible couplings
 * Rotary union, a coupling for passing fluid through a rotating joint
 * Pivot joint, between animal bones
 * Slip ring assembly, used to send electrical power and signals across a rotating connection
 * Waveguide rotary joint, used to send microwave power and signals across a rotating connection
 * , in the International Space Station