The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5925-01-373-1040
NSN 5935-01-205-6906
NSN 4140-01-301-4651
NSN 6105-00-844-7275
NSN 6645-01-556-5263
NSN 4140-01-563-8482
NSN 5855-00-361-0167
NSN 4140-00-231-1475
NSN 5855-00-004-0904
NSN 5855-01-610-1766
NSN 6105-01-200-7271
NSN 5996-01-400-1640