This document summarizes an endurance and leakage test of a duo cone seal. The test was conducted on a test rig system to evaluate seal life and detect any oil leakage. The test rig was set up with specific dimensions and parameters including a thrust load of 2 kg/cm2 and maximum motor speed of 4000 RPM. The duo cone seal sample with dimensions 82.5x63.5x16 mm was tested over 1000 hours under normal test conditions. Observations recorded during the test intervals showed no burning, pitting or oil leakage on the seal face. The seal qualified the endurance and leakage test by demonstrating no significant deviations from the acceptance criteria over the 1000 hour trial period under standard test conditions.