The seal should be solid, all the way around. I don't know the part number for you K6, but for the K2 (last model on my parts list), it's part number 17221-341-000 and is called "PACKING, air cleaner case." You might try one of the on-line parts fiche sites to varify your part number, or try a Honda dealer. I have no idea if it's still available. Let us know what you find. Good luck.