A sterilization apparatus for sterilizing receptacle closures , comprising: - a guide sector , the apparatus being configured, for each closure , so that the closure is sterilized during a movement of the closure along the guide sector , the apparatus being configured so that, for each closure , the closure is sterilized by introducing a sterilization agent in said guide sector ; - a sterile and/or aseptic chamber , the guide sector being located within the chamber ; - a first track sector located outside with respect to the chamber ; - a plurality of first carts mechanically independent from each other; - a second track sector located within the chamber ; - a plurality of second carts mechanically independent from each other; - a plurality of pushers ; wherein the apparatus is configured so that: - for each first cart , the first cart can be subjected to a movement along the first track sector and outside the chamber ; - for each second cart , the second cart can be subjected to a movement along the second track sector and within the chamber ; - for each pusher , the pusher can be subjected to a movement along the guide sector and within the chamber ; - for each pusher , the movement of the pusher along the guide sector corresponds to the movement of at least one closure along the guide sector , by means of the pusher pushing the at least one closure ; - for each second cart , the movement of the second cart along the second track sector corresponds to the movement of a respective pusher along the guide sector , by means of a mechanical coupling between the second cart and the pusher ; - for each first cart , the movement of the first cart along the first track sector corresponds to the movement of a respective second cart along the second track sector , by means of magnetic and/or electromagnetic interaction between the first cart and the second cart ; - the guide sector and the first track sector are located on opposite sides of the second track sector . - a guide sector , the apparatus being configured, for each closure , so that the closure is sterilized during a movement of the closure along the guide sector , the apparatus being configured so that, for each closure , the closure is sterilized by introducing a sterilization agent in said guide sector ; - a sterile and/or aseptic chamber , the guide sector being located within the chamber ; - a first track sector located outside with respect to the chamber ; - a plurality of first carts mechanically independent from each other; - a second track sector located within the chamber ; - a plurality of second carts mechanically independent from each other; - a plurality of pushers ; - for each first cart , the first cart can be subjected to a movement along the first track sector and outside the chamber ; - for each second cart , the second cart can be subjected to a movement along the second track sector and within the chamber ; - for each pusher , the pusher can be subjected to a movement along the guide sector and within the chamber ; - for each pusher , the movement of the pusher along the guide sector corresponds to the movement of at least one closure along the guide sector , by means of the pusher pushing the at least one closure ; - for each second cart , the movement of the second cart along the second track sector corresponds to the movement of a respective pusher along the guide sector , by means of a mechanical coupling between the second cart and the pusher ; - for each first cart , the movement of the first cart along the first track sector corresponds to the movement of a respective second cart along the second track sector , by means of magnetic and/or electromagnetic interaction between the first cart and the second cart ; - the guide sector and the first track sector are located on opposite sides of the second track sector . <EOS>