The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6240-01-268-0409
NSN 5920-01-634-0250
NSN 6610-00-500-6944
NSN 6610-00-146-3499
NSN 6150-01-562-6569
NSN 5999-01-294-9897
NSN 5930-01-130-8254
NSN 6320-01-170-4068
NSN 5920-01-646-8531
NSN 5925-01-173-7286
NSN 5905-01-013-0840
NSN 5999-00-967-4850