The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 4140-01-088-6624
NSN 5895-01-502-6601
NSN 6610-00-430-5208
NSN 6610-01-660-1712
NSN 6150-01-341-7220
NSN 5945-01-464-4231
NSN 6610-00-716-5248
NSN 5920-01-521-4066
NSN 5835-00-834-1286
NSN 5920-01-631-6988
NSN 5905-01-571-7948
NSN 6610-01-326-8660