The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6220-00-165-7095
NSN 5915-01-255-9661
NSN 5935-00-903-1926
NSN 6650-01-622-6645
NSN 5960-01-609-6565
NSN 5950-00-221-4664
NSN 5996-00-231-9322
NSN 6110-00-534-1441
NSN 6610-01-459-7535
NSN 5835-01-541-9991
NSN 2925-01-439-4451
NSN 2925-00-060-8292