This support ring, also known as mounting ring, is a genuine OEM replacement part for use in food waste disposers. It is a circular plastic piece with an outer diameter of 4.75 inches. It is found inside the disposer housing where it provides support and stability to the unit. The ring helps to evenly distribute the weight of the disposer and waste evenly, so that the disposer does not fall out of alignment. Over time, the support ring may break due to the continuous grinding within the unit, and the exposure to moisture and waste. If the ring is no longer able to stabilize the unit, you will notice food and waste leakage, excessive vibrations, and damage to the disposer components. To begin this repair, first disconnect the disposer from the mounting assembly, and pull out the faulty ring. Place the new ring in its place and reattach the disposer to the mounting assembly.