The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5999-01-585-8435
NSN 5930-01-429-0857
NSN 5920-00-867-9939
NSN 6650-01-426-4253
NSN 6150-01-013-9492
NSN 5996-01-543-9058
NSN 6110-01-443-8284
NSN 4140-00-107-5284
NSN 5835-00-828-9335
NSN 5960-00-515-7366
NSN 5945-00-290-1779
NSN 5965-00-026-9408