The tank leaks where attached to bowl. Are there any universal gaskets I can use?

Please verify that the leak is coming from where the tank joins with the bowl first. More often water leaks from the float assembly, where it seals to the tank. If it is in fact leaking from where you stated. Did the toilet come assembled or did you attach the tank? You may want to exchange it or drain the water out, disassemble the two halves and inspect all three mating surfaces. Let me know if there is anything else. Good luck.

You have to remove the tank and replace the tank gasket and the tank to bowl bolts and gaskets as well, do not reuse them, they will leak again.

Could be a few issue. First check at the back where the tank sits on the bowl, reach underneath or look with a flashlight if you can to see between the tank and the bow, pay attention to the bolts in particular, if you see any water dripping down the bolts or between the tank and the bowl, the tank to bowl gasket ir bowl gasket bolts are leaking, and need to be replaced. Also look inside the bowl when its flushing, no water should be splashing up over the edge of the tank. Also inspect underneath the fill valve that gasket could also be leaking, or the supply line could be leaking.

no --it means use the pre-drilled holes at the base of the pan/bowl to secure the pan/bowl to the floor

Hello, W/D here.
The gasket you are talking about is hard to get into the hole properly. It tends to want to "bunch up" on one side or the other. The easiest way that I know of to install it is to place the gasket on the tank and then to wet the seal and wiggle the tank as you set the tank onto the back of the bowl. Water based jelly also works (better). Just apply sparingly if using the jelly; place a little around the seal, and a little around the molded socket of the bowl, and place the tank on the bowl. wiggle the tank back and forth lightly, then align the tank with the bowl and insert the bolts. If you have a mirror and flashlight, use them to help inspect your work as you go.
Best regards, --W/D--

have plumber recheck tank to bowl gasket make sure it is correct size also make sure flush valve is correct part not a universal some tanks are thick or thin porclean may extend to far out of tank bottoming out in bowl connection also proper bolt tighting is essential

Yes. You will have to remove your tank from the bowl to replace the defective fill stack(the tube thing your flapper is attached to) it is not as hard as it seems.First remove water supply tube.Then remove the through the tank bolts. should be two of them. Lift off and turn tank upside down. remove spud gasket. Unscrew old stack. You should be able to get a universal kit to work with your tank and should come with all new parts including new flapper and spud gasket. You will need new through the tank bolts and note the sequence of assembly to get water tight seal on tank. Hope this helps

you should have two bolts going through the tank connecting the tank to the bowl , inbetween those bolts is the pipe that the water flows through from your tank to your bowl , this pipe has a gasket on it. if the bolts are loose on the tank it will cause that gasket to leak, you have to take the bolts off and get a new tank to bowl gasket, any plumbing supply place should have some for you , you will want to get new tank to bowl bolts ang gaskets for that aswell or you will have problems with those leaking too when you put it all back together!

I would change out the flush valve itself...it will come with the right gasket....it won't cost anywhere near the price of a new toilet...and it will save you time in the long run..good luck and.thanks for rating my effort....the fang.