Papr, small, blue, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus, mark 2 replacement part
NSN 5999-01-014-2561
NSN 5985-01-209-3233
NSN 6685-01-024-0530
NSN 5905-00-822-3293
NSN 5835-00-933-9609
NSN 5930-01-515-9620
NSN 6620-01-408-4464
NSN 4140-01-146-4474
NSN 6220-01-642-8678
NSN 6110-01-258-6483
NSN 6650-01-069-1665
NSN 6220-00-873-6261