GM V-5 Shaft Seal Surface Analysis 

One piece lip seal is the newest style / type seal used to keep refrigerant from leaking around shaft and nose cone. The seal must maintain proper tension against shaft to prevent refrigerant leakage.

Increased Shaft Seal Diameter Indicates Wear and Allows Leakage To Occur

New Seal I.D.         Treated I.D.          Untreated Seal I.D.
     0.479                     0.481                          0.542
   Baseline                .002 Wear                   .063 Wear

                   Untreated Seal                                         Treated Seal
                                 S E M 1000 X Magnification

E D S of Shaft Seal Surface

Other GM V-5 Tests
* GM V-5 Performance Test
 * GM V-5 Durability Testing
 * Orifice Tube Contamination
 * GM V-5 Shaft Seal Surface Analysis
 * GM Shaft Bearing S E M / E D S
 * GM V-5 Thrust Bearing