The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 7035-00-946-2642
NSN 5960-00-450-2229
NSN 5915-01-529-7351
NSN 5975-01-434-1773
NSN 2925-01-472-4423
NSN 5999-01-606-2594
NSN 6145-01-287-9251
NSN 7035-01-027-2259
NSN 6145-01-432-2066
NSN 7035-00-541-8516
NSN 6240-01-480-0224
NSN 5996-01-535-0963