The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5996-01-536-1891
NSN 6130-01-274-4635
NSN 6110-01-114-7896
NSN 5998-01-154-2044
NSN 5990-01-514-8030
NSN 6135-01-025-8109
NSN 5950-01-168-7568
NSN 5855-01-213-9076
NSN 5835-01-441-4746
NSN 5930-01-076-3683
NSN 6650-00-299-1839
NSN 6240-00-398-0740