The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5975-01-380-9477
NSN 5985-01-487-5521
NSN 5965-00-825-6734
NSN 4140-00-817-6009
NSN 5998-01-573-5645
NSN 6220-01-362-5303
NSN 6105-00-855-0134
NSN 5835-01-399-5820
NSN 6150-00-686-4905
NSN 6240-00-919-9186
NSN 6685-01-613-2829
NSN 6320-01-415-0953