The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6650-01-014-5990
NSN 2925-01-074-5303
NSN 4140-01-117-7733
NSN 5855-01-541-5569
NSN 7035-00-445-9657
NSN 2925-00-513-6644
NSN 6105-01-153-0830
NSN 5975-01-328-7481
NSN 5965-01-243-5494
NSN 6220-01-618-6408
NSN 6135-01-164-3561
NSN 5975-00-156-3253