Can I prepare for a post directly after the obturation with SendoSeal MTA?

Yes, that is possible, but in a case that you need to do so we recommend that you use a warm plugger to be able to remove the master point gutta-percha to a point where you would like to place your post.
After that you prepare for you post as you normally do.
If you don’t want to / or do not have a warm plugger available, we recommend that you wait 48 hours before preparing for a post.