New Toto Drake II flush valve seal mangled and leaking

[dbump]

I installed a new Toto Drake II with the tower-style flush valve a month ago. I recently noticed water dripping from the tank; after reading the advice here, I took it off and filled the tank, and it's clearly dripping directly from the nut that secures the flush valve. When I pulled that apart, the gasket has two concentric fins that have been clamped in opposite directions, which I'm guessing is the cause of the leak, as the china surface where it would seat is fairly smooth and flat, though I will sand that. I'm not finding replacement seals--do I just need a whole new tower to get that one piece?

The other side was similar, but not as bad, and I was able to gently work my thumbnail between the two "fins" to get them to stop sticking together in a warped way, so one side will probably seal pretty well, but I doubt the pictured side will.

 

[Terry]

I would check with the people you bought it from. They sometimes have parts on hand or that they can rob. The seal looks a bit odd to me. Not quite right.
If you can't find the part, sometimes Silicone will do it, though I definitely prefer going the new seal route.

 

[Sponsor]

 

[dbump]

Thanks for the quick reply! I got it through a big box, sadly (was the only place that could get it to me in under 2 weeks at the time). I'll try contacting Toto, and in the meanwhile I'll sand/re-assemble it and see how it goes. It just looks like the tower shifted during factory install and part of the rubber got crimped the wrong way and has now taken a set.

 

[Marlinman]

The gasket only is 9BU002E.

 

[Tuttles Revenge]

Yep, that number codes up at my Wholesale vendors. I bet Toto would send it to you for no charge.

 

[dbump]

I wasn't going to post an update until I received the parts, but I did contact Toto, and they are sending the entire flush valve at no charge, which includes the gasket.