The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6150-01-327-2009
NSN 5910-01-515-2570
NSN 5998-01-429-8441
NSN 6650-00-456-5892
NSN 6685-00-737-1959
NSN 5855-01-502-1607
NSN 4140-01-565-9055
NSN 5920-01-425-5700
NSN 5999-01-431-7050
NSN 5895-01-462-4503
NSN 5950-01-342-2783
NSN 6610-00-764-4015