The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5925-01-058-8459
NSN 6610-00-760-4476
NSN 5935-00-387-2479
NSN 5895-01-421-2690
NSN 6650-01-109-3251
NSN 5945-00-127-3131
NSN 6650-00-171-4175
NSN 5945-00-515-2667
NSN 5895-01-511-7700
NSN 5895-01-646-7152
NSN 5925-01-432-8431
NSN 7035-01-014-3808