Beware! The original factory rope seals were easy-to-cut asbestos.... the new generation of rope seals (which entered the marketplace by the early-mid-1980s) are extremely-difficult-to-cut non-asbestos rope seals... plan on extra time and to use a serrated type cutting blade (razor blade will not cut the non-asbestos rope as it contains Kevlar.. tougher than steel).

My opinion is to only use a rubber seal surrounding the crank.. and soak the side seals with mineral spirits before installing them so that they'll properly swell and expand within the side cavities.