The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5910-00-889-2639
NSN 6110-00-120-1215
NSN 6105-01-099-2837
NSN 5996-01-592-8104
NSN 5915-01-462-2124
NSN 5895-00-003-0433
NSN 5905-00-134-9888
NSN 5905-00-671-2961
NSN 6240-01-644-7623
NSN 5895-00-169-7912
NSN 5895-01-233-4566
NSN 5835-00-572-7445