EXPANDER SYSTEM

The present invention relates to an expander system (10) for recovering waste heat, a waste heat recovery system (1) comprising such an expander system (10), a vehicle comprising such a waste heat recovery system (1) and a method for manufacturing such an expander system. [0002] The expander system comprises a shaft (11) and a coupling portion (12) comprising a first sealing unit (16) and a second sealing unit (17). The shaft is inserted through the coupling portion to an expanding unit (13). The first sealing unit (16) and the second sealing unit (17) are arranged facing one another along the shaft (11). The first sealing unit (16) and the second sealing unit (17) are configured to seal the shaft (11) in an axial direction relative to the shaft.