Abstract: A sealing device seals between a rotating shaft inserted into a container and the container. The sealing device includes a housing positioned around the rotating shaft and fixed to the container, a filler filled between the housing and the rotating shaft, and a holding mechanism part securing the filler positioned between the housing and the rotating shaft. The holding mechanism part includes a storing chamber in which the filler is stored in a housing side with respect to the rotating shaft, and a driving part which projects to the storing chamber fixed to the rotating shaft and is driven to flow the filler.