CPC F04B 1/124 (2013.01) [F04B 1/2078 (2013.01)] | 16 Claims |
1. A piston of a hydraulic piston machine, the piston having a hollow surrounded by a wall and an insert arranged in the hollow, wherein at least two pliable rings are arranged between the insert and the wall, wherein a gap is formed between the insert and the wall, and wherein at least a first ring of the at least two rings comprises at least one thin section having a radial extent smaller than a largest radial extent of the first ring and forming a passage for a fluid.
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