The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5835-00-725-2087
NSN 5905-01-020-9235
NSN 6105-01-019-8008
NSN 6105-00-631-3009
NSN 5998-00-180-8262
NSN 6650-01-517-7903
NSN 5975-00-959-8304
NSN 2925-01-140-8957
NSN 5910-00-357-3111
NSN 6150-01-144-1568
NSN 5935-01-472-7741
NSN 6320-00-242-3300