Gas turbine having at least two shafts designed as hollow shafts at least in some areas and arranged coaxially relative to one another

A gas turbine having at least two shafts designed as hollow shafts at least in some areas and arranged coaxially relative to one another, which shafts are rotatably mounted using bearing devices in the area of a casing, where a hydraulic intermediate shaft sealing device is arranged between the bearing devices of the shafts, which separates a first area provided inside at least one of the shafts and limited by the shafts from an area provided outside the shafts, where in the area limited by the shafts an operating pressure prevails that differs from the operating pressure acting in the area outside the shafts, the intermediate shaft sealing device includes a sealing element connected to a first shaft, the sealing element extending over the circumference of the first shaft, and has an inner groove area with a defined groove depth, in which a further sealing element connected to the second shaft radially engages, and where the operating pressure is applied in the area limited by the shafts in the axial direction of the shafts, to facing effective areas of the sealing elements, while the pressure prevailing in the area outside the shafts in the axial direction acts on effective areas of the sealing elements facing away from one another, characterized in that a ratio between the outer diameters limiting the facing effective areas and the inner diameters likewise limiting these effective areas is in each case greater than or equal to 1.25.