The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 2925-00-546-3129
NSN 5975-01-541-4972
NSN 6145-01-604-7029
NSN 5996-00-734-5364
NSN 5925-01-481-3442
NSN 5990-01-390-2177
NSN 6240-01-131-9244
NSN 6220-00-647-0835
NSN 6110-01-449-0150
NSN 5930-01-439-2765
NSN 5950-01-415-0276
NSN 5920-00-471-2548