The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5915-01-050-9080
NSN 5895-00-981-7312
NSN 6135-00-269-5843
NSN 5996-01-208-4065
NSN 5925-01-082-0591
NSN 5996-01-200-7282
NSN 5915-00-468-0086
NSN 6150-01-191-5846
NSN 6105-01-566-1293
NSN 5930-01-068-3641
NSN 6145-01-347-7331
NSN 5965-01-569-8634