A toilet system has a connector that defines a cylindrical aperture, with a threaded interior surface, around a central axis and that is configured for fixation to a support structure. A cylindrical waste pipe is elongated along the central axis and has a plurality of spaced ribs extending from an exterior surface. A ring-shaped gasket is positioned around the central axis and has a plurality of interior voids, each void corresponding to, and configured to, receive one of the spaced ribs. Further, the ring-shaped gasket has a threaded exterior surface, that slopes toward the central axis, and which is configured for engagement with the threaded interior surface of the connector.