I have not replaced either of those seals, nor have I used that specific tool. However, I have replaced many seals using that procedure. Some people run a self tapping screw into the seal, I prefer (carefully) drilling a small hole and threading a machine screw into the seal. I put grease on the end of the drill bit to collect any debris. You can feel when you get to the main threads of the screw and there's no sense going further. My slide hammer kit came with an adapter to thread into a standard pair of vise grips. Use a screw that will allow you about an inch sticking out of the seal so you can clamp the vise grips on, then "tap, tap, tap" and it'll pull the seal. I always try just one screw 1st(less debris), if you pull the screw out and the seal stays in, move to a new spot and use 2 screws 180° apart.