The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6130-01-089-6979
NSN 6105-00-026-9909
NSN 6130-01-364-6361
NSN 6150-01-359-1659
NSN 5835-01-232-6904
NSN 6620-01-444-4048
NSN 7035-01-327-4456
NSN 6150-01-435-4483
NSN 6220-01-448-5438
NSN 6130-01-013-1947
NSN 5945-01-472-0580
NSN 6685-01-069-9177