Mark 2 re placement part, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus
NSN 6685-00-806-7633
NSN 5996-01-395-5033
NSN 5950-00-803-5641
NSN 6220-01-188-0135
NSN 6645-01-211-1782
NSN 6650-01-467-2355
NSN 5990-01-218-8976
NSN 6105-01-153-8864
NSN 5905-01-496-1567
NSN 6150-00-469-7017
NSN 5998-01-592-9625
NSN 6110-00-959-3386