The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6685-00-621-5011
NSN 6685-00-737-1959
NSN 6240-01-323-1228
NSN 5996-00-038-8276
NSN 5835-01-185-1102
NSN 6110-00-452-0448
NSN 6220-01-207-1229
NSN 5855-00-149-0766
NSN 5915-01-508-8452
NSN 5960-00-073-0646
NSN 5996-00-117-4337
NSN 5905-00-351-8087