The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5910-00-856-4474
NSN 5855-01-510-4564
NSN 6150-01-615-8965
NSN 6130-00-335-9712
NSN 5999-00-896-9933
NSN 6620-00-082-1525
NSN 5855-00-951-6483
NSN 5930-01-159-6151
NSN 5930-00-581-4797
NSN 6320-01-532-7491
NSN 6620-01-206-5748
NSN 7035-01-580-6250