The F-1 engine was the powerhouse of the first stage of the Saturn V rocket that launched the Apollo lunar missions.
The F-1 engine used LOX (liquid oxygen) and PR-1 (kerosene) as propellants. The LOX dome forced the liquid oxygen from the turbopump to the injector, where it would then mix with RP-1 before being burned. The dome was located near the top of the engine, just above the injector plate.
This LOX dome was part of an F-1 engine that launched the Apollo 11 Saturn V. Around 2.5 minutes after launch, the first stage was jettisoned and fell into the Atlantic Ocean. In 2013, F-1 components were recovered from the ocean floor by Bezos Expeditions.
The National Aeronautics and Space Administration transferred the engine parts to the National Air and Space Museum in 2016.
This object is on display in Destination Moon at the National Air and Space Museum in Washington, DC.