A burnished film of graphite fluoride was used to lubricate a sphere-on-plane test configuration. Compressive stress and sphere wear volume were determined as functions of time from the wear scar area on the sphere. The stress variation was extreme, from 122,000 psi initial value to a final value of 796 psi after 376.2 min of rubbing. The rate of volume worn was approximately constant after the first two minutes.Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference held in Atlanta, Georgia, October 16–18, 1973