Mark 2 replacement part, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus
NSN 5998-01-371-5055
NSN 6650-01-428-9958
NSN 5855-01-392-1110
NSN 4140-00-613-9209
NSN 5960-01-464-9605
NSN 2925-01-495-2690
NSN 5935-01-172-8855
NSN 5910-00-279-1981
NSN 6620-00-690-8905
NSN 5910-00-555-3003
NSN 5895-01-008-7263
NSN 5915-00-573-9041