The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5960-01-442-9304
NSN 6610-01-372-9248
NSN 6150-00-538-9887
NSN 6135-00-471-5356
NSN 6130-00-851-6664
NSN 6620-01-201-4176
NSN 6135-01-077-5705
NSN 5835-00-998-5757
NSN 5975-01-239-2623
NSN 5895-01-206-1834
NSN 6135-01-230-4399
NSN 5910-00-079-1309