The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6135-01-377-5729
NSN 5930-00-927-0639
NSN 5920-01-501-5961
NSN 6145-01-518-3411
NSN 5975-01-591-5969
NSN 5999-01-493-4113
NSN 5930-00-362-6737
NSN 6240-01-391-7773
NSN 5835-01-394-3812
NSN 6110-00-621-3475
NSN 5975-00-714-2892
NSN 6150-01-278-5485