317372 is on left. 205572 on right. They look the same size. Outer and inner diameters are only a couple thousandths different. The flat part that seals against the surface of lower unit that folds is 5/32 thinner on 317372. Maybe you can find a 5/32 piece of rubber to cut out and glue to it. Not sure what kind of glue. Maybe another member can give advice. Maybe super glue,weatherstrip adhesive,marine silicone. Just a suggestion. Good luck
mn
