OMC Evinrude Johnson Ring Backup

An OMC Evinrude Johnson Ring Backup, also known as a Backup Ring, is a factory original equipment part used in OMC Evinrude and Johnson outboards. It's designed to seal and support various parts within the outboard's hydraulic system, such as the power tilt and trim mechanism. These rings are typically made of rubber or synthetic material and have a specific shape and size to fit inside the end cap or other component they are designed to seal. The backup ring helps to prevent leaks and ensures proper operation of the power tilt and trim system.