Docking Ring
A docking ring is a device used to connect two spacecraft or space stations in orbit. Docking rings are typically located at the front or rear of a spacecraft and are designed to mate with a corresponding docking port on another spacecraft.
Docking rings generally consist of a series of mechanical latches and electrical connectors that allow two spacecraft to be joined together. The latches hold the spacecraft together while the connectors establish communication and allow for the transfer of resources such as air, water, and fuel.