I have a Ritchey Pro Carbon seat post standard 27.2 used for about a year. I installed it on my bike which is CF but I notice the seat tube on the inside is lined with alloy. I used carbon past because I have a previous seatpost get stuck and had to basically tear it out. So today I wanted to lower my seat about 2mm and went to do this and sure enough the seatpost is stuck. I started twisting the seat and the top part of the seatpost just came loose. The top seatpost with the clamp sits down on the seatpost. It is an alloy top that is I would assume is bonded to the top of the CF seatpost. I pulled up the whole saddle and with the seatpost top. I then manage to turn the carbon seatpost and get it out with channel lock pliers. In the process the seatpost seems fine other than some digging in when I was turning the pliers and surface rough where it was in the seat tube. Then I figure I need another seatpost no big deal but then it hits me.

THe seat post itself seem to be strong nothing crushed or any feeling it was giving out. I wondered about how to get the alloy top back on and I simply coated the whole thing with superglue and pushed it back down ont he seatpost. It sure seems like it is complete bonded back and it sure was not moving anymore. I then cleaned the seat post up with some 220 sandpaper and this time is used grease ( vasoline) and plenty of it all up and down the seat post. I then put it back on the bike and took a short ride and all seems well. What do some of the experts think? I am a mechanic myself but never exactly had this situation. The superglue is really strong and I use it all the time as I repair guitars for a living. Since the alloy top sits down over the seatpost I am not worried about that causing a problem the most that could happen is that over time it will works loose again and I then have to replace. I do wonder if I could have compromised the seatpost itself and just cannot tell. Here is a picture of it and the top is a separate attachment. I hope this makes sense.

I would have used epoxy, slow cure. I would have roughened the top and post interfaces first. I would have used real lubing grease, not body lube, on the post/frame interfaces. Let us know how all works for you after a few weeks/months. Andy.

+1 on using epoxy. Superglue is generally poor at filling gaps and isn't water resistant.

I do like to use Vaseline at times since it is water resistant. Epoxy would be the choice. I think I will check it is a few weeks to see how it does. I just do not want another suck seatpost. My other CF bike and seatpost never has this issue and I use carbon paste on it too. Maybe because the seat tube has the alloy lining is why it wants to seize up. Never underestimate Vaseline I use it building wheels as a lube too for the nipples.