U/w breathing apparatus 4240-01-075; see af to. 14s5-19-11
No other part numbers with same form, fit, and function found.
A rigid item which serves as a reinforcement for the nose region and has accommodations to hold in place the elastic band of the oxygen mask.
NSN 6105-01-135-4646
NSN 5920-00-155-2173
NSN 5996-00-179-9583
NSN 5925-00-452-1270
NSN 6645-01-373-8860
NSN 6610-01-195-3497
NSN 6240-01-247-1512
NSN 6610-00-230-1810
NSN 5975-01-364-0969
NSN 6620-01-308-5723
NSN 6685-01-364-1025
NSN 6150-01-021-2678