What should you do if the face seal on th protective mask is not soft smooth and pliable?

That's kind of a funny question. When I was an Enlisted man, I had a defective nose cup seal. It was rather unfortunate for me when I entered the gas chamber unaware, lets just say I got to see my breakfast twice that day. I used chapstick for a quick fix, however you should report the malfunction to your supply officer immediately.