The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6135-00-299-6918
NSN 5960-01-344-2604
NSN 6650-00-486-7924
NSN 5998-00-451-4957
NSN 5905-00-876-4469
NSN 5855-01-147-6024
NSN 7035-01-432-9034
NSN 5915-01-243-6682
NSN 5935-01-294-7288
NSN 5996-00-448-1245
NSN 5985-00-618-9436
NSN 6220-01-344-8874