Wall hung toilet assembly with a sloped gasket

A toilet system, comprising:

• a connector configured for fixation to a support structure, the connector including a flange defining a cylindrical aperture with a threaded interior surface around a central axis, the threaded interior surface sloping toward the central axis from a wide side of the flange to a narrow side of the flange;
• a cylindrical waste pipe elongated along the central axis and having a first open end configured to form a fluid connection with a toilet and a second open end, a plurality of spaced ribs extending from an exterior surface of the waste pipe adjacent to the second open end;
• and
• a ring-shaped gasket positioned around the central axis and having:
• a plurality of interior voids each corresponding to and configured to receive one of the spaced ribs, engagement between the spaced ribs and interior voids forcing the ring-shaped gasket to rotate around the central axis in response to rotation of the waste pipe around the central axis;
• and
• a threaded exterior surface configured for engagement with the threaded interior surface of the flange, the threaded exterior surface sloping toward the central axis from a wide end of the ring-shaped gasket to a narrow end of the ring-shaped gasket,
• wherein when the narrow end of the ring-shaped gasket is positioned within the wide side of the connector, rotation of the ring-shaped gasket around the central axis tightens a seal formed between the threaded interior surface of the aperture and the threaded exterior surface of the ring-shaped gasket.