The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6150-01-106-2446
NSN 6110-00-450-9883
NSN 5960-01-058-8582
NSN 5855-00-908-6402
NSN 6645-01-073-5302
NSN 4140-01-652-2126
NSN 5835-01-468-6170
NSN 6610-01-212-5545
NSN 6135-00-998-5884
NSN 5985-00-552-2507
NSN 5925-01-084-2370
NSN 5895-01-110-6737