Sealing device for piston rod of reciprocating compressor

In order to provide a sealing device (15) for sealing a piston rod (8) of a reciprocating compressor (1), which sealing device provides good sealing performance when the compressor is stationary, which sealing device has a simple structure, allows simple operation and does not require an external energy source, the sealing device (15) comprises a plurality of first filler holders (18), each holder comprises a holding opening (18a) in which a first filling ring (19) is arranged, a second filling holder (20) comprising a holding opening (20a) in which a second filling ring (21) is arranged, the second holder (20) being positioned closer to a second axial device end (15b) than the plurality of first filling holders (18) in the axial direction of the sealing device (15), wherein the second filler ring (21) is an uncut ring comprising a continuous inner circumferential sealing surface (21a), where the second filler ring (21) is made of a material comprising a polymer having a coefficient of thermal expansion (alph