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 6610-01-010-4516
NSN 5985-00-725-1554
NSN 5835-00-222-3956
NSN 4140-00-893-2754
NSN 5895-00-005-2945
NSN 5990-00-552-9365
NSN 5910-01-608-4412
NSN 5950-00-116-8576
NSN 6620-01-178-4771
NSN 5950-00-144-4139
NSN 5930-01-646-2315
NSN 5999-01-351-4902