The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6220-00-856-3583
NSN 5945-00-937-3261
NSN 5975-01-477-7775
NSN 6130-01-208-6481
NSN 5960-00-901-5745
NSN 6650-00-073-6542
NSN 5895-00-905-3985
NSN 5925-01-029-3483
NSN 5920-01-029-3813
NSN 6645-00-081-4298
NSN 2925-01-547-4565
NSN 6110-01-315-0815