The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5996-01-055-0010
NSN 6150-00-583-9878
NSN 6135-01-633-8502
NSN 6620-00-273-8735
NSN 5835-01-504-0837
NSN 2925-00-419-5868
NSN 5999-01-461-1368
NSN 4140-01-218-5919
NSN 5985-00-601-1528
NSN 7035-01-265-2301
NSN 2925-01-322-9780
NSN 6610-01-250-2811