The mouthpiece is black
A cushionlike device that is contour-fitted around the teeth. It is specifically designed to fit between the teeth and the breathing apparatus mouthpiece to provide a controlled supply of breathing gas such as air, oxygen, mixture, and the like, during dive and/or rescue.
NSN 6620-01-307-4037
NSN 2925-01-408-6205
NSN 7035-01-103-6845
NSN 5960-01-481-3722
NSN 5905-01-166-1888
NSN 6685-01-106-8396
NSN 6240-01-434-6776
NSN 5910-00-039-9074
NSN 6110-00-500-4914
NSN 6130-00-266-7496
NSN 6620-01-345-1336
NSN 6135-01-059-4055