The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6685-00-788-7599
NSN 6135-00-377-9165
NSN 7035-01-633-9537
NSN 7035-00-830-1235
NSN 5996-01-252-7939
NSN 5915-01-482-5502
NSN 5975-01-181-6212
NSN 5960-01-173-2338
NSN 6150-01-241-1384
NSN 5960-00-297-7099
NSN 5975-00-304-9748
NSN 5920-00-717-6839