Apollo Saturn V F-1 Rocket Engine Turbine End Bearing Support Red Rubber Closure, circa 1970, measuring 19″ in diameter, featuring the Rocketdyne logo in white vinyl, and marked with part no. "RX-20633-25H." Always used on ground prior to installation into the Saturn V 1st Stage. In very good to fine condition, with some rippling to the vinyl emblem. Accompanied by a diagram showing the location of the cover's installation.