Jim, I didn't use any sealant on the large o-ring gasket (the one that falls out when you take the bracket loose that holds the idler bearings.) Since the gasket and whole area were dry (no oil residues) I figure that the gasket is only to stop dust from getting in there. For removing the old bearings from the pulleys, I put each pulley over a partially open large shop vice and hammered the bearings out using a large 1/2" drive socket that fit the closest. From what I have read in the DML archives, this seems to be the established way to do it. Oh, before you drive the bearings out, you need to remove the snap rings. I used snap ring pliers. When you put it back together, beware that the pictorial diagram in the parts manual is wrong. It don't fit together that way. I hope you took notes when you took it apart. When you are done, make sure the belts all line up properly. At a DeLorean show I saw one guy's car with the pulley bracket put on wrong so that the belts were misaligned by 1/4" or so. Doh! I have never gotten into a DeLorean water pump (yet) but one thing to mention that I don't think I have seen in any of the archives yet is that there is a little oil hole on the top of the pump just behind the pulley. The pump should last longer if a few drops of oil are put in that hole on rare occasion -- especially if the car has been in storage for a few years. Walt Tampa, FL