Abstract: An interface device for a purging unit for purging a wafer container with a purging gas, which comprises a contact piece for contacting a purging interface of a wafer container, wherein the contact piece is movably arranged in the purging unit and has a gas passage in its interior. A corresponding interface device is provided. The object is to specify an interface device which, when the wafer container is coupled to the purging unit, makes it possible to seal a gas inlet or a gas outlet, to introduce or to discharge a purging gas into the wafer container, thereby compensating for and adapting to vertical and horizontal movements, preventing wear, and fulfilling a passive coupling and sealing function as well as offering maximum durability and reliability. This is achieved by a contact piece which is suspended directly or indirectly in the purging unit by means of a spring device.

Abstract: An interface device for a purging unit for purging a wafer container with a purging gas, which comprises a contact piece for contacting a purging interface of a wafer container, wherein the contact piece is movably arranged in the purging unit and has a gas passage in its interior. A corresponding interface device is provided. The object is to specify an interface device which, when the wafer container is coupled to the purging unit, makes it possible to seal a gas inlet or a gas outlet, to introduce or to discharge a purging gas into the wafer container, thereby compensating for and adapting to vertical and horizontal movements, preventing wear, and fulfilling a passive coupling and sealing function as well as offering maximum durability and reliability. This is achieved by a contact piece which is suspended directly or indirectly in the purging unit by means of a spring device.