The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5915-01-178-3970
NSN 5925-01-344-2266
NSN 5975-01-255-8854
NSN 6320-01-422-1212
NSN 5835-01-157-5886
NSN 2925-01-587-3956
NSN 5915-01-279-8155
NSN 6685-00-924-0755
NSN 6145-01-435-5700
NSN 5945-01-478-6096
NSN 5975-01-421-7903
NSN 6240-00-262-2894