The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6650-01-467-2355
NSN 5895-01-567-8769
NSN 5905-01-441-2322
NSN 6220-01-360-2532
NSN 5996-01-480-3037
NSN 5935-00-586-1067
NSN 4140-00-099-9205
NSN 5965-01-356-4426
NSN 6150-01-577-1916
NSN 5996-00-065-3400
NSN 5915-01-572-3786
NSN 5965-00-866-3371