I had to use my own set to seal them. The third one was also missing the bumpers between the seat and the bowl. Kohler toilet w/ piston water flush 2 step doesn't flush even at the 1st step ...

Kohler, TOTO, Mansfield, Gerber, and more. Prior to purchase, please ensure to measure the size of the replacement toilet flapper. We highly recommend verifying the diameter of your toilet's drain ...