The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5990-00-444-6987
NSN 5935-01-442-8090
NSN 6105-00-972-3042
NSN 6220-01-401-5337
NSN 5855-00-308-0474
NSN 7035-01-578-5403
NSN 6650-01-123-3110
NSN 5835-01-545-2629
NSN 5910-01-172-4269
NSN 5905-01-289-1164
NSN 5998-01-399-8714
NSN 6105-00-222-0987