It was great. I have heard of this tool but have never seen one. The vid showing removal and re installation was great. Even a numchuck like myself should be able to do that. With the proper tool, of course.
Lisle 58430 Shaft Type Seal Puller
Your post aroused my curiosity. I did an online search and discovered that Lisle also makes a Cork Screw seal removal tool.
The average price of these tools was $8-$20 US. Not bad.