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 4140-01-447-2419
NSN 5895-01-553-6558
NSN 6320-00-213-0477
NSN 6610-00-598-5268
NSN 6610-01-603-7069
NSN 5855-00-688-9954
NSN 6135-00-985-7846
NSN 5999-01-180-4582
NSN 5855-01-530-4147
NSN 6150-00-775-7274
NSN 5945-00-206-2774
NSN 6150-01-452-5874