Air that is used exclusively for human respiration.
NSN 6320-00-369-1333
NSN 5950-00-197-7705
NSN 6685-01-391-6790
NSN 6620-01-419-3524
NSN 5905-00-565-0020
NSN 6620-00-257-2783
NSN 5915-01-391-7830
NSN 6145-00-683-1169
NSN 5855-01-117-7207
NSN 5910-00-921-6707
NSN 6645-00-854-7505
NSN 6110-01-219-0792