Fluid compression apparatus and filling station

A fluid compression apparatus comprising:

• a compression chamber,
• an intake system in communication with the compression chamber,
• a piston comprising an axial body moveable in translation in a longitudinal direction to compress the fluid in the compression chamber, the piston being moveable in relation to a static structure of the apparatus, the body of the piston comprising a tubular portion mounted about a static central guide connected to the static structure,
• a discharge orifice in communication with the compression chamber and designed to enable the egress of compressed fluid,
• a sealing system formed between the central guide and the tubular portion of the piston, the compression chamber being delimited by the tubular portion of the piston and a terminal end of the central guide, the central guide being connected to the static structure via a support part received in a longitudinal opening formed in the body of the piston and enabling the relative longitudinal sliding of the piston about the support part,
• wherein, during the translational movements of the piston, the body of the piston slides about the support part without passing through the support part.