The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5925-01-474-6615
NSN 5930-00-636-8888
NSN 5985-00-145-4567
NSN 6610-01-420-3780
NSN 4140-01-649-0939
NSN 5975-01-571-8533
NSN 5998-01-261-0921
NSN 5920-00-269-4060
NSN 6645-01-202-7986
NSN 5855-01-020-7982
NSN 5920-01-190-6424
NSN 6220-01-574-5975