The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6105-00-296-5116
NSN 5985-01-297-7607
NSN 6685-01-375-2841
NSN 5835-01-354-0566
NSN 6685-00-232-3239
NSN 6220-01-537-8179
NSN 5930-01-018-1888
NSN 5945-01-217-7372
NSN 5999-01-060-0020
NSN 7035-01-070-1175
NSN 6645-01-557-4608
NSN 5996-01-375-4583