The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6150-01-493-4376
NSN 6110-01-276-5407
NSN 5855-01-262-8013
NSN 6240-01-003-8666
NSN 5999-01-018-7773
NSN 5990-01-544-0364
NSN 5905-01-435-5505
NSN 5855-01-643-5871
NSN 6145-00-269-4271
NSN 6110-01-258-1291
NSN 5960-00-489-8804
NSN 5835-01-072-7693