You do not need to use a sealer on it since it is plastic impregnated. For Dymondwood you simply sand it to about 320 grit and then buff it with a sewn cotton wheel and a rouge such as "JacksonCR White" (about 600 grit). Then if you want you can give it a final buff with a loose cotton wheel and "Jackson 51 White" (about 1200 grit). One trick is to have two sets of buffing wheels. Use one set for brass. Then tape the brass and switch to your other set of wheels for the handle. Even if your "wood buffs" get some discoloration on them from the brass you can clean it out. Take a scrap piece of wood and buff on a sharp 90 degree edge of the wood. Typically I feed the rouge from one end of the rouge stick onto the brass buffs and from the other end of the rouge stick onto the wood buffs. This helps keep the brass from transferring from the rouge stick onto the "wood buffs".