The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5895-01-483-5456
NSN 5895-00-299-1601
NSN 5930-01-316-6715
NSN 5920-01-058-9241
NSN 5855-00-361-0167
NSN 6650-01-418-9471
NSN 6240-01-502-7883
NSN 6645-01-373-8860
NSN 5905-01-425-5545
NSN 5895-01-264-7724
NSN 6645-01-644-3850
NSN 5975-00-636-4910