Fits into either of the two facepiece ports; enables respirator to be operated in the airline mode
NSN 5895-01-168-9754
NSN 6645-00-879-3867
NSN 5910-00-223-9826
NSN 6685-01-371-9207
NSN 6150-01-473-4556
NSN 5999-01-365-1498
NSN 5905-01-050-8400
NSN 5985-01-503-9199
NSN 5935-00-189-1426
NSN 5985-01-100-3471
NSN 5930-00-158-5784
NSN 6135-01-422-1440