Arrangement comprising a sealing ring that extends around a central axis, a fitting with a sealing ring receptacle into which the sealing ring is inserted, a receiving space and a pressing zone which can be mechanically pressed, and a pipe section which can be pushed into the receiving space of the fitting along an insertion direction, wherein the sealing ring receptacle has a free space region behind the sealing ring when viewed in the insertion direction, wherein the sealing ring projects with a contact section radially out of the sealing ring receptacle into the receiving space in such a way that the end face of the pipe section can be brought into contact with the contact section when the pipe section is pushed in, and the sealing ring tilting from an initial position into a tilted position when the pipe section is pushed in in the direction of insertion, in such a way that the contact section can be moved in the direction of the free space region and comes to rest at least partially in the free space region wherein the sealing ring has an outer circumferential line, an inner circumferential line and two lateral circumferential lines (14, 15), wherein the outer circumferential line and the inner circumferential line lie in a plane extending at right angles to the central axis, wherein the lateral circumferential lines (14, 15) lie axially spaced apart from one another as seen in the direction of the central axis, characterized in that the outer circumferential line and the inner circumferential line lie in a plane extending at right angles to the central axis, characterized in that the sealing ring receptacle has an annular wall section which preferably extends at right angles to the central axis, a conical wall section extending on the outside of the annular wall section in the direction of the central axis in such a way that the inner diameter of the conical wall section decreases with increasing distance from the annular wall section, and wherein the transition from the annular wall section to the conical wall section is formed as a concave rounding, and wherein the sealing ring is in the initial position with a lateral circumferential line in contact with the annular wall section and with the outer circumferential line in contact with the conical wall section or with the concave rounding. a sealing ring that extends around a central axis, a fitting with a sealing ring receptacle into which the sealing ring is inserted, a receiving space and a pressing zone which can be mechanically pressed, and a pipe section which can be pushed into the receiving space of the fitting along an insertion direction, wherein the sealing ring receptacle has a free space region behind the sealing ring when viewed in the insertion direction, wherein the sealing ring projects with a contact section radially out of the sealing ring receptacle into the receiving space in such a way that the end face of the pipe section can be brought into contact with the contact section when the pipe section is pushed in, and the sealing ring tilting from an initial position into a tilted position when the pipe section is pushed in in the direction of insertion, in such a way that the contact section can be moved in the direction of the free space region and comes to rest at least partially in the free space region wherein the sealing ring has an outer circumferential line, an inner circumferential line and two lateral circumferential lines (14, 15), wherein the outer circumferential line and the inner circumferential line lie in a plane extending at right angles to the central axis, wherein the lateral circumferential lines (14, 15) lie axially spaced apart from one another as seen in the direction of the central axis, characterized in that the outer circumferential line and the inner circumferential line lie in a plane extending at right angles to the central axis, characterized in that the sealing ring receptacle has an annular wall section which preferably extends at right angles to the central axis, a conical wall section extending on the outside of the annular wall section in the direction of the central axis in such a way that the inner diameter of the conical wall section decreases with increasing distance from the annular wall section, and wherein the transition from the annular wall section to the conical wall section is formed as a concave rounding, and wherein the sealing ring is in the initial position with a lateral circumferential line in contact with the annular wall section and with the outer circumferential line in contact with the conical wall section or with the concave rounding.