The invention relates to a device for connecting medical disposable articles in a sterile manner said device being composed of an outlet connector (1) that includes an outlet cylinder (4) which is provided with a seal (6) and which is closed at one end thereof a sleeve nut (8) on the outlet connector (1) and an inlet connector (2) which can be connected to the outlet connector (1) and which is closed at one end thereof. The outlet connector (1) and the inlet connector (2) are each closed by a perforation seal (9 9 ) at the facing ends thereof.