No, it lubricates.
From http://en.wikipedia.org/wiki/Lubricant
"Non-liquid lubricants include grease, powders (dry graphite, PTFE,
Molybdenum disulfide, etc.), teflon tape used in plumbing, air
cushion and others. Another approach to reducing friction and wear
is to use bearings such as ball bearings, roller bearings or air
bearings, which in turn require internal lubrication themselves, or
to use sound, in the case of acoustic lubrication."
Now that's a thought...have a CB with ball bearings in it!