The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 4140-01-092-0807
NSN 6320-01-054-3046
NSN 5905-00-003-0376
NSN 6135-01-069-2482
NSN 2925-01-614-0087
NSN 5965-00-021-5620
NSN 5925-01-424-8343
NSN 6130-01-583-7576
NSN 6150-01-005-0150
NSN 6650-00-440-3537
NSN 6650-00-302-3707
NSN 5990-00-284-0537