Fits into either of the two facepiece ports; enables respirator to be operated in the airline mode
NSN 6650-00-774-7078
NSN 5905-01-542-9115
NSN 5910-01-394-0290
NSN 5975-01-128-3023
NSN 4140-00-550-2994
NSN 5990-01-565-2226
NSN 5915-00-358-2407
NSN 2925-01-156-9570
NSN 6110-01-532-3682
NSN 4140-00-948-3663
NSN 6685-01-063-8297
NSN 6150-01-576-9020