The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5920-01-383-4550
NSN 6145-00-950-9017
NSN 5920-01-543-6348
NSN 6685-01-522-5345
NSN 5905-01-066-0772
NSN 5990-01-463-5400
NSN 5915-00-705-9410
NSN 5960-00-419-3641
NSN 5930-00-147-5686
NSN 5855-00-149-0766
NSN 5985-01-643-0140
NSN 5985-00-777-2000