Originally Posted By 71birdJ68
Just wondering out loud, but why doesn't someone come up with a one pice seal like we put in the nose if airplane engines. You stretch it around the flag and then glue into the case, and they don't leak.


My best educated guess is the flange on the back of the crank is to large compared to the seal I.D. and stretching a Polyacrylate or Fluoroelastomer (Viton) seal much if at all would prove very difficult IMO.
Not to mention the damage that can occur to the seal dragging it across the flange.