Thank you so much! I was not aware that the o-rings were only on the top, so that is good to know. I checked several places online for the o-rings last week and nobody showed them. And that made me wonder if what kind of seal they use, if any. So I was really hoping that posting here would answer that question. Anyhow, I emailed liftpartswarehouse.com, where I have purchased other parts for this lift, and they did not respond to my request for seals/o-rings. So perhaps driving to a Yale/Hyster dealer is what I will have to do. I have a large set of o-rings, but the kit never seems to have the right size. Too thin, too thick, etc. So I would rather buy the correct ones so I don't have to do the job twice. Thank you again for your help!