KM-35 series of masks is the latest big serial production oxygen mask in Soviet / Russian air force. It
was developed in late 1980s and might be a further upgrade of the KM-34D series 2 mask - though it
there is a chance that KM-34D series 2 mask itself is a beefed up version of earlier KM-34 design to the
standard of the new KM-35.
The outside shell and the rubber insert inside of KM-35 mask appear to be the same
as those found on KM-34D series 2 - in fact there exists a number of hybrids where KM-34D series 2 shell
contains KM-35 rubber insert and reverse. The main and maybe the only difference between these two mask
is that a smaller pressure hose that runs from the front of the mask is now somewhat shorter - on all
previsous masks it was a completly seperate hose, while in KM-35 series of masks this hose runs
alongside the main one for about 2/3 of the length and then it enters it. I'm not sure if this system
is compatable with old oxygen mask system, but the word in collector's circle is that KM-35 can be used
only in Su-27 family of aircraft.
KM-35 masks make use of the latest mask hooks similar to those on KM-34 series of masks and thus is
compatable with ZSh-5 and ZSh-7 family of helmets.
View of KM-35M mask from the front. Note that extrenally mask's shell is similar to KM-34D
series 2 mask.
The right side of the KM-35 mask. Once again, notice a striking similarity to the KM-34D series
2 mask.
Oxygen hose arrangement of the KM-35M mask. While it's hard to see due to the hose's cover, there
is only one hose on the buttom, 1/3 of the way up it divides into two different hoses - the main
oxygen hose which enters mask on the left side and the smaller pressure hose that connects to the front
of the mask.
The unusual 3-point microphone plug (MG-4) on this KM-35M mask. Not all of the KM-35 masks use
this type of connector.
Inside of the KM-35M mask. In the center, covered by microphone, is the exhale and pressure
valves. On the right, barely seen on this picture, is the valve that prevents exhaled air from exiting
into the main oxygen hose.
Another shot of the KM-35M insides - this one shows the left side of the mask. Note the seal for
the microphone wiring. Just above it is the inside part of the occipital bladder connector.
Close up on the stamp on nose part the KM-35 shell. It's clearly labeled as KM-35.
Label inside of the KM-35 shell. On the first line is the name of the mask and it's size; on the
second line is mask's serial number.
Stamp on the rubber insert. It gives name of the mask and it's size.
