Piston ring for a piston compressor

A piston ring comprising a first annular body and a second annular body, which annular bodies are arranged adjacent and concentric to each other in an axial direction (A),

• wherein the first annular body has a radially outwardly directed outer side, an upper and a lower flank, and a radially inwardly directed inner side,
• wherein the second annular body is formed as a segmented sealing ring comprising a plurality of sealing ring segments, which sealing ring segments each have a radially outwardly directed sealing surface, an upper and a lower sealing ring segment flank as well as a radially inwardly directed inner side,
• wherein the sealing ring segments are each guided on the first annular body by means of at least one guide means formed as guide ribs which engage in guide grooves, which guide means substantially prevent twisting of the sealing ring segments against the first annular body in a circumferential direction (U) and permit displacement of the sealing ring segments transversely to the axial direction (A), wherein the first annular body is formed in one piece.