The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5945-00-727-0394
NSN 5990-01-606-1873
NSN 5910-00-420-1227
NSN 5930-01-165-5846
NSN 6130-01-496-7675
NSN 5930-00-400-0834
NSN 5835-01-442-6482
NSN 5925-00-148-8241
NSN 5999-00-070-2910
NSN 5975-01-574-6181
NSN 6620-01-454-5717
NSN 5835-00-023-0780