US Patent 10077604 Sealing element mounting

A sealing assembly for sealing against a piece of oilfield equipment in a wellbore. The sealing assembly has a support housing and the support housing defines an inner wall and a port configured for fluid communication with the wellbore. Such inner wall defines a stop shoulder, and the support housing has a limit structure proximate one or both end(s). A sealing element is contained within the support housing. A ring is connected to the sealing element at one or both end(s). Each ring is configured for slidable movement along the inner wall of the support housing and further configured to float between the stop shoulder and the limit structure.