Temporary sealed double-door junction device, for temporarily connecting a controlled-environment enclosure to a controlled-environment flexible-walled removable container, comprising, on the one hand, a female flange normally blocked off by a female door, forming an assembly intended to block off an opening of such an enclosure and, on the other hand, a male flange normally blocked off by a male door, forming an assembly intended to block off an opening of such a flexible-walled removable container, the male flange being capable of being coupled in a sealed manner to the female flange, and the male door being capable of being coupled in a sealed manner to the female door and of passing through the female flange, characterized in that: * the male door intended to be fixed to a flexible-walled removable container is passed through in a central portion by a freely-rotating shaft on which are mounted, firmly fixed to each other, on the side of the face intended to be docked to the female door, an impeller having at least two blades and, on the side of the opposite face, a crank having at least two arms, designed so as to be capable of being driven in rotation by action through a flexible wall of such a flexible-walled removable container, * the female door comprises, below its face intended to be docked against the male door, notches arranged in the thickness of said female door, capable of receiving blades of the impeller, during a rotation of the latter, thus securing the two doors together, * the inner section of the male flange and the outer section of the male door have complementary outlines that have, relative to the shaft situated in the central portion, distance variations such that the crank has at least one angular closed configuration in which the ends of at least some of its arms extend beyond the door and rest on the flange so as to secure the male door to the male flange, and an angular open configuration in which said ends are away from the flange and allow the movement of the male door through the female flange. * the male door intended to be fixed to a flexible-walled removable container is passed through in a central portion by a freely-rotating shaft on which are mounted, firmly fixed to each other, on the side of the face intended to be docked to the female door, an impeller having at least two blades and, on the side of the opposite face, a crank having at least two arms, designed so as to be capable of being driven in rotation by action through a flexible wall of such a flexible-walled removable container, * the female door comprises, below its face intended to be docked against the male door, notches arranged in the thickness of said female door, capable of receiving blades of the impeller, during a rotation of the latter, thus securing the two doors together, * the inner section of the male flange and the outer section of the male door have complementary outlines that have, relative to the shaft situated in the central portion, distance variations such that the crank has at least one angular closed configuration in which the ends of at least some of its arms extend beyond the door and rest on the flange so as to secure the male door to the male flange, and an angular open configuration in which said ends are away from the flange and allow the movement of the male door through the female flange.