The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5925-01-072-3867
NSN 5945-00-481-4876
NSN 5998-01-581-9400
NSN 5925-00-806-5341
NSN 6320-01-449-1014
NSN 5950-00-741-2811
NSN 5996-00-512-1197
NSN 5990-00-503-4724
NSN 6645-01-042-4220
NSN 5925-00-494-2874
NSN 6650-01-202-9143
NSN 5998-01-451-8004