The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6240-01-151-2330
NSN 6105-01-445-1581
NSN 6240-01-437-8991
NSN 5950-01-578-7857
NSN 5925-01-214-8249
NSN 5996-01-522-2830
NSN 5996-00-363-9666
NSN 5996-01-306-2076
NSN 6110-00-839-2654
NSN 6135-01-532-4104
NSN 5985-01-616-5430
NSN 5950-01-558-4072