Abstract: A kit apparatus includes plural pairs of plug members of varying corresponding sizes, wherein at least one plug member of the pair includes a smooth cylindrical body, with an enlarged head mounted thereon for sealing relationship relative to vacuum line, wherein an opposed plug member of the pair includes a cylindrical body with an enlarged head and at least including a plurality of concentric sealing rings to enhance sealing securement with a corresponding vacuum line when a vacuum line is separated from a vacuum source, such as in a carburetor in an automotive environment.