not to interfere, but we seal every block of wood that goes through our place- and that is a lot- i have tried quite a few different things. glue- it seems to flake off after a while, those proper log sealing emulsions- like "anchorseal" they get porous after a year or so. what i have found to work the best is plain old wax- we buy it in slabs by the 100# but you can buy smaller blocks from the craft stores for making candles, heat it up outside and dip the ends in. it lasts the best- is the ultimate seal.- just what we have found!