The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5835-00-419-6576
NSN 5935-00-259-9865
NSN 6105-00-112-0967
NSN 7035-01-364-0286
NSN 6135-01-101-5039
NSN 6220-00-595-6954
NSN 5965-01-468-6186
NSN 5915-01-499-5242
NSN 6610-01-431-8575
NSN 6105-00-593-3817
NSN 5905-01-179-4200
NSN 6645-01-367-2581