As the other reviewers have mentioned, this piece is garbage. It will need replacing at least once a year. I've been without a toilet in my master bath for 3 days waiting for a plumber to come out and fix this issue yet again. And with COVID, I don't like having random people in my home. Very disappointed in this product from Kohler. Will not buy or recommend a Kohler toilet again because of this issue. Please make a better seal. This one is garbage.