Briggs B350005 tank to bowl gasket only. This does not come with the hardware kit B321606. However this gasket works on the tank model numbers 4470 and 4472. This is a three inch tank to bowl gasket. It is made from a soft rubber. The tank to bowl gasket goes in between the tank and the bowl at the bottom of the flush valve. 

The material of the gasket is rubber. Also it is soft. Therefore it gives easily. However it is a long lasting gasket. It acts as a seal. Which prevents leaks in between the tank and bowl. If the water is leaking onto the floor it is the tank to bowl. However if it is leaking into the bowl it is the flush valve. 

In conclusion, The Briggs B350005 Tank To Bowl Gasket is a rubber gasket. It is a genuine Briggs part. We only offer genuine Briggs part for the tanks they are meant for. It is the gasket for the 4470, and 4472 tanks. Also It is the genuine replacement part as well. Also it is a beveled gasket. Meaning one side is smaller in diameter. 

• Genuine Briggs replacement part
• 3 inch tank to bowl gasket
• Made from rubber
• Acts as a seal