The cork seal is KS129, and it comes mounted in the steel frame that supports it on the crankshaft. If the cover that the cork presses against isn't really smooth, it should be replaced as well. It is K126. Both of these parts can be purchased from your local AGCO dealer, or try <!-- w --><a class="postlink" href="http://www.agpartsfirst.com">www.agpartsfirst.com</a><!-- w --> they can get these for you as well.