Safety rotary transmission with face seal

In a safety rotary transmission for fluid media for the communicating connection of at least one space in a stationary casing with at least one space in a rotatable hollow shaft, in which the sealing of the hollow shaft and stationary casing is carried out by means of face seals, axially displaceable sleeve bodies on the hollow shaft being pressed by the action of compression springs onto sliding sealing rings and against supporting surfaces of the stationary casing, the improvement comprising that the hollow shaft (5) open at the face is introduced into a pressure-tight closable, stationary casing (1) and sealed only at the point of entry (6) by means of a single face seal (10) with sealing ring (11), the displacement of the sleeve body (13) on the hollow shaft (5) being limited by means of a compression spring (14) in the direction of the supporting surface (12) by a blocking device (19) such that a direct contact of sleeve body (13) and supporting surface (12) is prevented, that the counter-bearing of the compression spring (14) is provided by a retaining ring (15) and a fixing device (16), and that the stationary casing (1) has a pressure-tight closure (3), which is to be opened, opposite the open face (7) of the hollow shaft (5).