put the fork end with the seal in it, in a pot of boiling water for a few minutes. the seal will pry out with a flathead screw driver. be carefull not to scratch the mating surface though. if it doesn't come out easily put it back in the water for longer. now keep in mind that aluminum conducts heat very well so the fork tube will get pretty hot pretty quick. also DO NOT try and cool it off (like running it under cold water) this may warp it's shape