The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6110-01-338-6746
NSN 6135-00-782-6988
NSN 5965-01-335-6630
NSN 6240-00-087-1731
NSN 5996-01-244-7128
NSN 5920-01-030-9535
NSN 5996-00-597-2234
NSN 6240-00-001-5353
NSN 5965-01-148-4979
NSN 5945-00-156-0781
NSN 4140-00-106-6780
NSN 5985-00-021-3220