Ok,
We run a big gas compressor driven bt a Rolls Royce RB211 jet engine at work here that has a discharge pressure of 99 bar....We use the gas that the compressor is supplied with as a 'lube' for the seals, by directing some of the discharge gas into the mechanical seal...If we didnt do this there is the potential for the seal faces to contact and damage would result...
I dont see why you couldnt do the same using the compressed air as a lubricating medium, but in actual fact it isnt a lubrication per se...Its there to prevent the seal faces contacting...