The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5990-01-442-3520
NSN 5975-01-415-4283
NSN 6105-01-285-5690
NSN 5996-01-549-3844
NSN 5950-00-221-9086
NSN 4140-00-684-0992
NSN 5905-01-464-2822
NSN 6685-01-424-0753
NSN 5835-01-321-7895
NSN 6110-01-360-5661
NSN 5985-01-366-7345
NSN 5910-01-075-0783