The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6620-01-414-4578
NSN 5965-01-377-3587
NSN 5996-01-089-5339
NSN 5930-01-010-9441
NSN 6150-01-238-4116
NSN 6620-01-184-3193
NSN 5999-01-588-0736
NSN 5999-01-200-5982
NSN 7035-01-287-9817
NSN 5895-01-403-2793
NSN 5855-00-138-2386
NSN 5975-01-166-0921