Torsional vibration damper 1.1 with a primary part ; 1.2 with a secondary part , which can be turned relative to the primary part in a circumferential direction against the force of at least one spring element; wherein 1.3 the spring element is designed as a compression spring , which has two spring contact surfaces facing away from one another in the circumferential direction , to be specific a first spring contact surface , by way of which a compressive force can be introduced into the compression spring in the circumferential direction , and a second spring contact surface , by way of which a compressive force can be introduced into the compression spring in the circumferential direction ; wherein 1.4 the primary part has a primary part contact surface , which is facing the first spring contact surface in the circumferential direction and lies opposite it in such a way that, by relative turning of the first spring contact surface in relation to the primary part contact surface , or vice versa, the compressive force can be applied to the first spring contact surface by way of the primary contact surface , and 1.5 the secondary part has a secondary part contact surface , which is facing the second spring contact surface in the circumferential direction and lies opposite it in such a way that, by relative turning of the second spring contact surface in relation to the secondary part contact surface , or vice versa, the compressive force can be applied to the second spring contact surface by way of the secondary part contact surface ; and 1.6 in a state in which the pressure is not applied, a spacing between the first spring contact surface and the primary part contact surface and/or a spacing between the second spring contact surface and the secondary part contact surface is formed by way of the surfaces in a step-shaped or steadily tapering manner, characterized in that the compression spring is formed as a bow spring, which extends over its entire length in the circumferential direction . 1.1 with a primary part ; 1.2 with a secondary part , which can be turned relative to the primary part in a circumferential direction against the force of at least one spring element; wherein 1.3 the spring element is designed as a compression spring , which has two spring contact surfaces facing away from one another in the circumferential direction , to be specific a first spring contact surface , by way of which a compressive force can be introduced into the compression spring in the circumferential direction , and a second spring contact surface , by way of which a compressive force can be introduced into the compression spring in the circumferential direction ; wherein 1.4 the primary part has a primary part contact surface , which is facing the first spring contact surface in the circumferential direction and lies opposite it in such a way that, by relative turning of the first spring contact surface in relation to the primary part contact surface , or vice versa, the compressive force can be applied to the first spring contact surface by way of the primary contact surface , and 1.5 the secondary part has a secondary part contact surface , which is facing the second spring contact surface in the circumferential direction and lies opposite it in such a way that, by relative turning of the second spring contact surface in relation to the secondary part contact surface , or vice versa, the compressive force can be applied to the second spring contact surface by way of the secondary part contact surface ; and 1.6 in a state in which the pressure is not applied, a spacing between the first spring contact surface and the primary part contact surface and/or a spacing between the second spring contact surface and the secondary part contact surface is formed by way of the surfaces in a step-shaped or steadily tapering manner, <EOS>