The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5990-00-931-6304
NSN 5895-01-372-9726
NSN 5985-00-105-7686
NSN 6135-01-166-5042
NSN 5835-00-058-0384
NSN 5945-00-517-9566
NSN 6240-00-082-1142
NSN 5855-01-497-0467
NSN 6620-01-032-3937
NSN 4140-01-407-6595
NSN 5985-00-130-6553
NSN 6240-01-119-9292