A processing apparatus configured to conduct a prescribed processing on an object to be processed in a specific environment, the processing apparatus comprising: a chamber configured to have an aperture and an interior accommodated to a specific environment a mechanism of which at least a portion is contained within the chamber interior, while a remaining portion passes through the aperture without contacting the chamber at least one support member configured to support the mechanism a sealing member that configures a boundary of the specific environment and an atmospheric environment by connecting one end to the aperture and connecting the other end to the support member and a rotary member configured to allow relative rotation around a vertical axis between the support member and a structure that supports the support member.
