Provided is technology that is effective for shortening the time necessary for preparing a sealing member for sealing an open hole in a workpiece. A magazine (40) is a sealing member-supplying magazine for supplying a sealing member for sealing an open hole in a workpiece and comprises supplier bodies (50). Said supplier bodies (50) have a loading space (52) in which multiple regularly stacked sealing members (1) can be loaded and a supply port (58) in communication with the loading space (52), and are configured so as to successively supply the multiple sealing members (1) loaded in the loading space (52) from the supply port (58).