The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5920-01-089-7903
NSN 5930-01-422-1702
NSN 7035-01-193-2667
NSN 7035-01-080-8742
NSN 5999-01-237-6638
NSN 5990-00-953-9916
NSN 5960-00-167-7875
NSN 6135-01-131-7064
NSN 6135-00-299-6918
NSN 5855-01-003-7102
NSN 6645-01-364-0867
NSN 5910-00-392-6822