Mark 2 replacement part, 2 required, niosh/msha, meets ansi/ul 913, standard for intrinsically safe apparatus
NSN 5930-01-504-5684
NSN 6110-01-652-3917
NSN 5998-01-482-9784
NSN 5835-01-282-9768
NSN 2925-01-331-5039
NSN 5990-00-606-8299
NSN 5905-01-073-2926
NSN 6130-00-553-8758
NSN 5975-01-469-3784
NSN 6610-01-546-6885
NSN 5990-00-116-6590
NSN 6650-00-085-3846