Patent ID: 7815195

Claim:
A sealing arrangement consisting essentially of a sealing ring having a generally triangular or trapezoidal cross-section and two components moving relative to each other, said components having a first gap width therebetween, including a radially internal or external sealing surface that can be brought into flat area contact with at least one of said components to form a seal against a fluid medium, where, to one side of said sealing surface, said sealing ring displays a pressurizing surface to be pressurized by said fluid medium and, on the opposite side, a supporting surface for positioning against a supporting flank of the component accommodating the sealing ring, wherein one of said two components displays a groove without an undercut to receive said sealing ring, where said groove displays said supporting flank opposite said supporting surface of said sealing ring, and a pressure-side flank opposite said pressurizing surface of said sealing ring, where said sealing surface of said sealing ring projects from said groove in the radial direction, and wherein said sealing ring has a central longitudinal axis; wherein a second gap width is provided, at least between said pressurizing surface of the sealing ring and said pressure-side flank, into which said fluid medium to be provided on the pressure side of said sealing ring can flow, pressing said sealing ring in sealing fashion against said supporting flank of said groove and against one of said two components, and, by application of pressure by said fluid medium, said supporting surface of said sealing ring over the height and circumference of the sealing ring is brought into flat area contact with said supporting flank of said groove, wherein said supporting surface of said sealing ring as well as said supporting flank of said groove have an inclination angle of 30° to 60° towards said sealing surface, wherein said supporting surface is designed as a lateral surface of a truncated cone, resulting in flat contact with said supporting flank of said groove, wherein said second gap extends over the entire lateral extension of said sealing ring, wherein said sealing ring is divided almost completely or throughout in the radial direction at one point on its circumference, forming a weaker area, wherein said sealing ring is radially compressed outwards towards said radially internal sealing surface, or radially compressed inwards towards said radially external sealing surface, wherein said sealing surface is in flat area sealing contact with one of said two components to form a seal when said sealing ring is pressurized, and wherein said supporting surface of said sealing ring is in flat area contact with said supporting flank of said groove in any expansion or compression state of the sealing ring due to pressure changes of said fluid medium.