The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 2925-01-178-0063
NSN 6135-01-485-4512
NSN 5915-00-188-4054
NSN 5910-01-004-9267
NSN 5975-01-085-9021
NSN 6620-01-168-8450
NSN 6220-01-050-8923
NSN 5910-00-143-4984
NSN 6150-00-647-3285
NSN 6650-01-449-3042
NSN 5999-01-463-7443
NSN 5999-01-025-9377