The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5905-00-923-0558
NSN 6150-00-455-7996
NSN 5965-01-592-3051
NSN 5998-00-347-9473
NSN 5910-01-464-2879
NSN 7035-01-463-3368
NSN 6610-01-542-8825
NSN 6620-00-545-4049
NSN 5920-01-468-0186
NSN 5950-00-923-2893
NSN 5985-01-307-2454
NSN 5998-01-434-1220