The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5950-01-250-1762
NSN 5895-00-883-1625
NSN 4140-01-411-5908
NSN 6135-01-506-4791
NSN 5960-01-577-0628
NSN 6135-01-462-6040
NSN 5920-00-116-4959
NSN 5990-00-717-8022
NSN 2925-00-026-0005
NSN 5935-01-097-4345
NSN 5999-01-328-7930
NSN 6135-00-182-7008