A system for sealing an inflatable prosthesis is disclosed, comprising: a prosthesis inflation device (200; 900); a tube (204) operatively connected to the prosthesis (202; 902) near one end and the prosthesis inflation device (200; 900) on the other end; a plug (402) attached to the tube (204) at the prosthesis end of the tube (204); and, a rigid ring (412) attached to the prosthesis (202; 902) and slidably attached around the tube (204) between the prosthesis inflation device (200; 900) and the plug (402); wherein pulling the tube towards the prosthesis inflation device (200; 900) causes plug to lodge in the rigid ring (412), sealing the prosthesis (202; 902) with the plug (402).