Air that is used exclusively for human respiration.
NSN 6320-01-369-5014
NSN 6145-01-486-7959
NSN 5920-01-438-9399
NSN 5950-00-434-4468
NSN 5945-01-359-9822
NSN 5950-01-587-7985
NSN 5996-00-779-0835
NSN 5895-01-653-0691
NSN 7035-00-043-1325
NSN 5930-00-726-2067
NSN 2925-00-258-5916
NSN 2925-01-397-2495