Non lubricants will cause rapid face wear. A non-lubricant is any fluid with a film thickness less than one micron at its operating load and operating temperature. The carbon has a concave or convex wear pattern High-pressure distortion. The gland holding the stationary seal carbon face is not perpendicular to the shaft. It is causing an uneven loading on the carbon face.
Some companies lap a concave pattern as standard.
Check with your manufacturer. The carbon is not flat. The seal was shipped out of flat. The seal was rebuilt by a facility that cannot check flatness, or the person responsible for doing it does not know how. The carbon was shrunk into a metal holder.