The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6320-01-054-3046
NSN 6645-01-493-2620
NSN 5835-01-621-8553
NSN 5996-01-358-4045
NSN 5950-00-229-1509
NSN 6135-01-517-6060
NSN 6320-00-790-4844
NSN 4140-00-407-1326
NSN 6645-01-578-6815
NSN 5960-01-097-6817
NSN 6240-01-371-3020
NSN 5975-01-337-3903