The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5920-00-232-3699
NSN 6220-01-195-5198
NSN 6685-01-467-8789
NSN 5910-01-643-4568
NSN 5905-00-375-1239
NSN 5990-01-211-6136
NSN 7035-01-604-6339
NSN 5915-01-027-5809
NSN 5985-01-049-2653
NSN 6220-01-551-8277
NSN 5985-01-400-5948
NSN 6150-01-322-6388