The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6650-01-253-5654
NSN 5895-01-104-5865
NSN 6320-01-171-3238
NSN 5999-01-659-8639
NSN 6220-01-539-7846
NSN 5996-01-368-9058
NSN 5835-01-571-4083
NSN 5915-00-203-5890
NSN 5999-01-442-2132
NSN 6220-00-868-5651
NSN 4140-01-171-0785
NSN 6220-01-033-8656