Mark 2 re placement part, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus
NSN 5975-00-767-7945
NSN 6650-01-352-4674
NSN 6645-01-602-8275
NSN 5925-00-369-1596
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NSN 5996-01-086-3395
NSN 5965-01-472-1997
NSN 6620-00-526-4296
NSN 5905-01-440-6496
NSN 6685-00-532-4858
NSN 6240-00-186-3266
NSN 6650-01-648-1864