The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6240-00-170-5302
NSN 6145-01-494-2155
NSN 6135-00-080-9176
NSN 5960-00-258-9292
NSN 5996-01-119-2720
NSN 7035-01-473-0517
NSN 6220-00-426-1963
NSN 5920-01-573-7609
NSN 5920-00-880-0947
NSN 5930-00-372-1999
NSN 5945-01-211-6085
NSN 5895-01-608-2965