Multi-container filling machine technologies

An apparatus for closing fluid containers, the apparatus comprising:

• a container infeed;
• a filling station receiving at least one container from the container infeed, wherein in the filling station, the at least one container is at least partially filled with a quantity of fluid in an interior space of the at least one container;
• a rotary gassing station receiving the at least one container from the filling station, wherein in the rotary gassing station, the at least one container containing the quantity of fluid within the interior space thereof receives a quantity of gas in the interior space;
• a rotary seaming station positioned proximate to the rotary gassing station, wherein in the rotary seaming station, a lid is seamed to an opening of the at least one container to seal the quantity of fluid and the quantity of gas in the interior space;
• and
• at least one container piston of the rotary seaming station movable fully around a center axis of the rotary seaming station, the at least one container piston holding the at least one container between at least first radial position when the at least one container is within the rotary gassing station to at least a second radial position when the lid is seamed to the opening of the at least one container.