The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5905-01-616-5817
NSN 5925-00-958-4332
NSN 6650-00-534-5191
NSN 5930-00-003-5723
NSN 7035-01-223-0104
NSN 5990-01-025-7466
NSN 6685-00-737-1959
NSN 5999-00-515-7354
NSN 5999-00-539-2960
NSN 6130-01-107-0630
NSN 6130-01-074-6321
NSN 5999-01-456-4847