US Patent 11274429 Seals for closet collars

In various embodiments, an apparatus includes a toilet horn receptacle having an upper end and a lower end. A sealing rim is positioned at an upper end of the toilet horn receptacle, and at least a portion of the sealing rim extends inwardly from the upper end of the toilet horn receptacle towards a center axis of the sealing rim. A funnel extends from the lower end of the toilet horn receptacle, and a channel wall circumscribes the toilet horn receptacle. The channel wall and at least the toilet horn receptacle form a continuous annular receptacle. A foam sealing component is disposed in the continuous annular receptacle such that an inner wall of the foam sealing component circumscribes the toilet horn receptacle and such that the channel wall circumscribes at least a portion of an outer wall of the foam sealing component.