Anchorseall will help especially if you put on two coats but the best thing to do is to cut the pith out of it. I generally cut a 1/2" on either side of the pith then anchorseal the ends. The pith is where the cracks emminate from. If I can't cut the pith out I generally leave the logs about 6 to 8 inches longer than the diameter so that way when I cut the cracks off on the ends I will have 3 to 4 inches on each end to cut off to fresh wood.
Retirement: That’s when you return from work one day
and say, “Hi, Honey, I’m home – forever.”
To succeed in life, you need three things: a wishbone, a backbone and a funnybone.