Sealing element for placing between an injector and a cylinder head and an injector and a cylinder head provided with a sealing element of this type

A sealing element for placing between an injector and a cylinder head, said element comprising:

• a one-piece ring consisting of a flexible material, said ring providing a continuous support section having a radial thickness, a first sealing lip formed thereon for sealing the injector and a second sealing lip formed thereon for sealing the cylinder head, said sealing lips project substantially inwards in a radial direction and together with the support section form a continuous groove, the axial thickness of the first sealing lip and the axial thickness of the second sealing lip are predetermined on the basis of a force to be used to fix the injector in the cylinder head such that the sealing lips have adequate deformable plasticity for sealing purposes, wherein the radial thickness of the support section is greater than the axial thicknesses of the sealing lips and is predetermined such that the support section prevents the sealing element from being compressed when said sealing element is placed between the injector and the cylinder head.