The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5835-01-571-4083
NSN 5990-00-311-1031
NSN 6145-01-046-2155
NSN 6620-01-072-9372
NSN 5975-01-610-0559
NSN 6650-01-607-9343
NSN 6150-01-306-0608
NSN 5965-01-045-0247
NSN 5975-00-310-1099
NSN 6145-01-327-3328
NSN 6620-01-107-9916
NSN 6620-00-888-3179