The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6685-01-222-5556
NSN 6620-01-377-0414
NSN 7035-01-296-4737
NSN 6240-01-459-7827
NSN 5895-01-527-1614
NSN 5895-01-359-8704
NSN 5945-01-528-8140
NSN 5996-01-444-4547
NSN 5950-00-206-3213
NSN 5960-01-200-4621
NSN 6685-00-100-1511
NSN 6620-01-025-3401