Upon investigation, I found a small leak from both the port and starboard rudder shaft seals. They appear to be some kind of dripless seal since there does not seem to be any sort of packing gland follower. A google search turned up possibly a "Tide's lip seal" - but I am only basing that on the red "cap" that I am guessing is there to keep debris out. However, with the entire tube fiberglassed up to that metal ring it doesn't exactly look like any of the ones I've found online.

Any one replaced one of these or had it apart? I am guessing haul-out and dropping the rudders, but I obviously would want to have replacement parts ready to go. This is for a 2002 Carver 396. Any help would be greatly appreciated! Thanks!!