The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6650-01-604-9073
NSN 5855-00-147-2508
NSN 6610-01-050-3075
NSN 6135-01-348-8264
NSN 6145-01-093-7082
NSN 7035-00-679-9027
NSN 5905-01-588-3108
NSN 5996-00-285-3727
NSN 5945-00-851-5795
NSN 6610-00-001-3717
NSN 5925-00-676-1797
NSN 6150-00-208-3211