The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5996-01-170-1915
NSN 5920-01-412-0629
NSN 5965-01-613-3664
NSN 5965-00-062-0559
NSN 6145-01-472-2228
NSN 6320-01-582-6668
NSN 6320-01-578-6006
NSN 6105-01-016-5781
NSN 6320-01-450-1696
NSN 5985-00-841-9412
NSN 6145-01-086-1795
NSN 5945-00-145-9802