The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5998-00-107-2419
NSN 6320-01-388-1067
NSN 6620-01-512-0132
NSN 5925-01-296-9209
NSN 5855-00-079-2370
NSN 5915-01-352-7831
NSN 6620-01-576-7723
NSN 5895-00-089-9208
NSN 6320-01-440-8771
NSN 6220-01-197-0486
NSN 6620-01-288-4922
NSN 6610-00-759-2868