The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5960-00-110-3285
NSN 5985-01-534-5581
NSN 5930-01-227-1908
NSN 5950-01-397-8427
NSN 5835-01-388-4616
NSN 5985-00-479-8612
NSN 6130-00-113-9768
NSN 5910-01-511-5582
NSN 5920-01-071-2577
NSN 7035-01-518-9610
NSN 6645-01-171-4528
NSN 5945-00-119-3543