The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6240-00-423-9575
NSN 5835-01-575-5053
NSN 5950-00-913-9989
NSN 7035-00-535-8109
NSN 2925-00-155-2100
NSN 6220-01-547-8532
NSN 6685-01-203-7372
NSN 5935-00-259-7723
NSN 5945-00-304-9501
NSN 6685-00-890-7789
NSN 4140-00-115-0830
NSN 5999-01-082-2873