The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6135-01-163-0332
NSN 5925-01-504-2852
NSN 5935-00-515-2819
NSN 5855-01-149-4110
NSN 5925-01-294-1972
NSN 4140-00-497-3416
NSN 6645-00-928-7208
NSN 5965-01-633-8849
NSN 7035-01-123-8723
NSN 5945-00-735-2832
NSN 5998-01-555-8124
NSN 5920-00-925-2639