The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 7035-01-312-8573
NSN 7035-01-107-2811
NSN 5905-00-971-6901
NSN 5990-01-097-4721
NSN 5996-00-456-0895
NSN 5999-01-496-9386
NSN 5996-01-298-8325
NSN 6620-01-357-7751
NSN 6610-00-890-9099
NSN 5915-01-476-8841
NSN 6110-01-274-8039
NSN 6650-01-305-8881