The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6685-01-512-9982
NSN 5920-00-844-6714
NSN 6320-00-688-9983
NSN 5855-01-010-4921
NSN 6240-01-627-0063
NSN 4140-01-482-8447
NSN 6135-01-370-9441
NSN 5905-01-076-3633
NSN 5945-01-496-1680
NSN 7035-01-586-7715
NSN 6150-01-538-8102
NSN 5935-01-013-1991