The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5905-00-574-5557
NSN 7035-01-271-1643
NSN 5960-01-641-5493
NSN 5999-00-581-3414
NSN 6145-00-421-0968
NSN 6130-00-413-1288
NSN 5965-00-897-5560
NSN 5975-01-381-2763
NSN 5950-01-651-6476
NSN 6105-01-575-6261
NSN 5855-01-254-6826
NSN 5935-01-431-8100