Sole source required by statute 6.032; component of niosh approval tc-13f-197
No other part numbers with same form, fit, and function found.
NSN 5996-01-159-9089
NSN 6620-01-385-6172
NSN 5925-01-514-4329
NSN 6150-01-526-9313
NSN 5895-01-187-5141
NSN 5925-00-228-7605
NSN 5998-00-240-8650
NSN 5960-00-556-2621
NSN 5965-01-492-5695
NSN 6220-01-106-3215
NSN 7035-00-264-7543
NSN 5960-01-658-9538