The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5998-01-595-9077
NSN 5945-01-419-4225
NSN 6685-00-171-9815
NSN 5985-00-636-8689
NSN 4140-01-399-4352
NSN 6110-01-114-1683
NSN 6130-00-343-1660
NSN 6145-01-196-8787
NSN 6320-01-607-1491
NSN 5855-00-014-5008
NSN 6620-01-211-4098
NSN 6150-00-798-7004