Abstract: A sealing ring for a pressure control valve for controlling boost pressure in a combustion engine with turbocharger is provided, including a sealing body which is rotationally symmetrical with regard to a cylinder axis and is made from a material which comprises as main constituent one or more perfluorinated thermoplastics, wherein the sealing body has a substantially U-shaped cross-sectional profile with an apex region and two sealing lips which, starting from the apex region, extend parallel to one another or with an opening angle at least approximately in the direction of the cylinder axis; and a spring element which is rotationally symmetrical with regard to the cylinder axis and is made of steel with a substantially U-shaped cross-sectional profile, wherein the spring element is arranged between the sealing lips of the sealing body in such a way that it bears directly against the mutually facing surfaces thereof.