The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 7035-01-137-0620
NSN 6150-01-196-9623
NSN 5835-00-085-2287
NSN 6135-00-269-5843
NSN 6135-00-935-8769
NSN 5965-00-062-0559
NSN 6145-01-211-7577
NSN 5945-00-740-8238
NSN 6145-01-449-1343
NSN 6650-00-726-4242
NSN 5925-01-202-8352
NSN 5935-00-724-4489