The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5990-01-449-7090
NSN 5935-01-528-0406
NSN 5990-01-392-5682
NSN 4140-01-534-1589
NSN 5920-01-297-5895
NSN 5965-00-068-4812
NSN 6220-01-322-1689
NSN 5925-01-440-6940
NSN 6110-01-344-6885
NSN 5855-01-027-1571
NSN 5930-01-567-8933
NSN 6240-00-122-6087