Rocketdyne J-2 engine component, as used in NASA's Saturn IB and Saturn V launch vehicles. The circular component measures 7.75″ in diameter and has a green interior. Sealed within its original plastic, with a label identifying it as "P/N 459762-3." Housed within its original padded metal canister container. In very good to fine condition, with rust and wear to the canister.
Provenance: The Spaceflight America Museum and Science Center in Prince Frederick, MD.