Used on a breating valve without safety pressure black
NSN 6105-00-284-1590
NSN 5930-01-042-5168
NSN 6240-01-093-5553
NSN 6150-01-411-7427
NSN 5935-00-324-7570
NSN 6105-00-126-8432
NSN 7035-01-483-1776
NSN 5855-00-472-2055
NSN 6610-00-763-2415
NSN 5855-01-517-7325
NSN 6130-01-023-8031
NSN 6320-01-116-3980