Solid bowl screw centrifuge for separating an inflowing suspension into at least one liquid phase Fl and at least one solid phase Fe, comprising at least: a. a rotatable drum having an axis of rotation, wherein the drum has a cylindrical portion and a conical portion, b. at least one feed for a suspension (Su), at least one liquid drain, and at least one solid discharge, c. a screw arranged in the drum and rotatable relative to the rotatable drum with a differential speed, d. at least one or more drum bearings (221,222) for bearing the drum in a housing, e. at least one or more screw bearings for bearing the screw in the drum, f. at least one sealing assembly arranged between a drum shaft portion (219, 220) and the housing for protecting at least one of the bearings, in particular at least one of the drum bearings (221, 222), against ingress of constituents of the suspension Su, g. wherein the respective sealing assembly comprises at least two radial shaft sealing rings (400a, b, c, d) which are arranged at a mutual axial spacing to form at least one respective chamber (402a, b), h. wherein a gas pressure can be applied to the respective chamber (402a, b) by means of a gas source, so that a current gas pressure P akt is established therein, i. wherein the chamber (402a, b) can be pressurized with the gas pressure by means of a control and/or regulating device and the gas source, wherein the gas pressure P akt in the respective chamber (402a, b) can be varied by means of the control and/or regulating device, and j. wherein the respective line (404a, b) has a pressure measuring device and/or a pressure sensor with which the current gas pressure P akt in or outside the respective chamber (402a, b) can be measured or sensed, characterized in that k. the respective radial shaft sealing rings (400a, b, c, d) are arranged such that their respective sealing lips are directed away from the respective chamber (402a, b), l. the respective chamber (402a, b) can each be pressurized with the gas pressure via a bore (403a, 403b) and/or a line (404a, b), and m. the respective bore (403a, b) and/or the respective line (404a, b) comprises or forms an orifice plate (406a, 406b). a. a rotatable drum having an axis of rotation, wherein the drum has a cylindrical portion and a conical portion, b. at least one feed for a suspension (Su), at least one liquid drain, and at least one solid discharge, c. a screw arranged in the drum and rotatable relative to the rotatable drum with a differential speed, d. at least one or more drum bearings (221,222) for bearing the drum in a housing, e. at least one or more screw bearings for bearing the screw in the drum, f. at least one sealing assembly arranged between a drum shaft portion (219, 220) and the housing for protecting at least one of the bearings, in particular at least one of the drum bearings (221, 222), against ingress of constituents of the suspension Su, g. wherein the respective sealing assembly comprises at least two radial shaft sealing rings (400a, b, c, d) which are arranged at a mutual axial spacing to form at least one respective chamber (402a, b), h. wherein a gas pressure can be applied to the respective chamber (402a, b) by means of a gas source, so that a current gas pressure P akt is established therein, i. wherein the chamber (402a, b) can be pressurized with the gas pressure by means of a control and/or regulating device and the gas source, wherein the gas pressure P akt in the respective chamber (402a, b) can be varied by means of the control and/or regulating device, and j. wherein the respective line (404a, b) has a pressure measuring device and/or a pressure sensor with which the current gas pressure P akt in or outside the respective chamber (402a, b) can be measured or sensed, characterized in that k. the respective radial shaft sealing rings (400a, b, c, d) are arranged such that their respective sealing lips are directed away from the respective chamber (402a, b), l. the respective chamber (402a, b) can each be pressurized with the gas pressure via a bore (403a, 403b) and/or a line (404a, b), and m. the respective bore (403a, b) and/or the respective line (404a, b) comprises or forms an orifice plate (406a, 406b).