Sealing system

1 . A sealing system for separating two pressure zones, the sealing system comprising:

a shaft including a groove, which includes a plurality of groove sealing surfaces;

a component; and

a seal arranged between the shaft and the component, the seal extending axially in association with a longitudinal axis of the shaft, radially in association with a radial direction from the longitudinal axis, and circumferentially about the longitudinal axis, the seal being configured for moving axially in the groove, the seal including a plurality of sealing surfaces that include a first sealing surface and a second sealing surface opposing the first sealing surface axially, wherein, based on a plurality of pressure conditions in the two pressure zones, the seal is configured for being moved into a first functional position or a second functional position, wherein the seal further includes a sliding region and a radial sealing surface including a diameter D that is adjustable elastically by the sliding region, the seal further including an outside diameter that includes the radial sealing surface, wherein, in the first functional position, the sealing system is configured such that a separation of the two pressure zones is achieved, wherein, in the second functional position, the sealing system is configured such that a pressure equalization between the two pressure zones is made possible due to at least one of (i) at least one of the plurality of sealing surfaces having at least one first recess extending partially circumferentially such that in the second functional position a channel of the sealing system remains between the two pressure zones, the first sealing surface including the at least one first recess, the first sealing surface including an innermost radial extent and an outermost radial extent that is spaced apart radially from the innermost radial extent and extends to the outside diameter, the at least one first recess forming a gap in the innermost radial extent and extending radially outwardly of the innermost radial extent and circumferentially—but only partially circumferentially—about the shaft, and (ii) at least one of the plurality of groove sealing surfaces having a second recess such that in the second functional position the channel of the sealing system remains between the two pressure zones.

2 . The sealing system according to claim 1 , wherein the channel is formed in that the sealing system includes the at least one first recess and the second recess, the at least one first recess being formed as a pocket region in the first sealing surface of the seal, the second recess being adjacent to a remaining portion of the groove.

3 . The sealing system according to claim 1 , wherein the plurality of sealing surfaces of the seal are symmetrical.

4 . A retarder, comprising:

sealing system configured for separating two pressure zones, the sealing system including:

a shaft including a groove, which includes a plurality of groove sealing surfaces;

a component; and

a seal arranged between the shaft and the component, the seal extending axially in association with a longitudinal axis of the shaft, radially in association with a radial direction from the longitudinal axis, and circumferentially about the longitudinal axis, the seal being configured for moving axially in the groove, the seal including a plurality of sealing surfaces that include a first sealing surface and a second sealing surface opposing the first sealing surface axially, wherein, based on a plurality of pressure conditions in the two pressure zones, the seal is configured for being moved into a first functional position or a second functional position, wherein the seal further includes a sliding region and a radial sealing surface including a diameter D that is adjustable elastically by the sliding region, the seal further including an outside diameter that includes the radial sealing surface, wherein the two pressure zones include a first pressure zone and a second pressure zone, wherein the first pressure zone includes a working chamber of the retarder, wherein, based on a pressure ratio between the two pressure zones, the seal is configured for being moved into the first functional position or the second functional position, wherein, in the event of an overpressure in the first pressure zone, the seal is configured for being moved into the first functional position where the two pressure zones are sealed with respect to each other, wherein, in the event of an overpressure in the second pressure zone, the seal is configured for being moved into the second functional position such that a pressure equalization between the two pressure zones is facilitated by at least one of (i) at least one of the plurality of sealing surfaces having at least one first recess extending partially circumferentially such that in the second functional position a channel of the sealing system remains between the two pressure zones which makes the pressure equalization possible, the first sealing surface including the at least one first recess, the first sealing surface including an innermost radial extent and an outermost radial extent that is spaced apart radially from the innermost radial extent and extends to the outside diameter, the at least one first recess forming a gap in the innermost radial extent and extending radially outwardly of the innermost radial extent and circumferentially—but only partially circumferentially—about the shaft, and (ii) at least one of the groove sealing surfaces having a second recess such that in the second functional position the channel of the sealing system remains between the two pressure zones which makes the pressure equalization possible.