The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5925-01-428-9978
NSN 6320-00-343-1798
NSN 6685-01-477-3890
NSN 6610-01-462-5980
NSN 6145-01-287-8864
NSN 6135-00-897-8666
NSN 5996-00-518-4880
NSN 5965-01-330-6807
NSN 4140-00-287-9199
NSN 6620-01-146-4680
NSN 6145-00-331-6814
NSN 6130-01-628-5339