The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6610-01-163-1810
NSN 5930-01-323-4996
NSN 5920-00-642-9908
NSN 5965-01-077-3346
NSN 6110-00-508-5892
NSN 5996-01-472-2544
NSN 5930-01-142-7058
NSN 5935-01-486-9392
NSN 6685-00-443-7708
NSN 6220-01-561-3046
NSN 6645-00-641-3202
NSN 7035-01-421-4446