MS51910D, MILITARY STANDARD: SEAL, PLAIN ENCASED, SINGLE SEAL, EXTERNAL TYPE, SPRING LOADED (27 OCT 1986) [SUPERSEDED BY A-A-52524/6].
MS51910D, MILITARY STANDARD: SEAL, PLAIN ENCASED, SINGLE SEAL, EXTERNAL TYPE, SPRING LOADED (27 OCT 1986) [SUPERSEDED BY A-A-52524/6].