If you are putting together something like a stock clone, then you might wish to use, if you can fine, the teflon.
For a HP type engine, any of the available seals will work well.
Bear in mind that a seal, like a bearing, rides on a very thin layer of oil. Once that layer is established, during warmup, the crank doesn't know or care what
is under the micro thin layer of oil, it is actually running on.
This is to a large degree also true of all mating surfaces in an engine.
"Grumpy" Jenkins had (he has passed away) had a good story on the oil film....which is where I recieved originally, this information.
It's a little bit long to put on this thread......or else I would post it.