The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5960-00-275-7497
NSN 6620-01-367-4960
NSN 6150-01-373-2281
NSN 5895-00-513-7661
NSN 5935-00-362-3873
NSN 5990-00-296-4825
NSN 6105-00-495-6909
NSN 6150-01-286-5671
NSN 5910-00-176-3234
NSN 5999-01-608-8462
NSN 6650-01-455-8923
NSN 6320-01-643-0850