The invention relates to a device for sealing inflatable objects, especially tires, consisting of a container that contains sealing agents and has a gas inlet which can be connected to a gas pressure source and an outlet that can be coupled to an object that is to be sealed. The gas inlet and the outlet are connected to each other via the interior of the container. The gas inlet and the outlet are embodied in a discharge unit that is detachably connected to the container and is preferably screwed.