Sole source required by statute 6.302
The portion of a mask, air line; mask, chemical-biological; mask, gas; or other breathing equipment mask that partially or completely encloses the user's face.
NSN 5895-01-035-7311
NSN 5960-01-391-4701
NSN 5996-00-720-3064
NSN 5990-01-388-0252
NSN 6150-00-924-2271
NSN 5835-01-461-8184
NSN 5930-01-149-3088
NSN 5960-00-258-9292
NSN 5998-00-745-7668
NSN 6110-01-014-7568
NSN 5990-01-525-2250
NSN 6220-01-023-3179