The Briggs B350001 Flush Valve Gasket. This gasket is rubber. It is a three inch flush valve seal. Also this seal fits the flush valve on model numbers 4140, 4142, and 4143. The flush valve gasket goes at the bottom of the flush valve against the tank. Therefore it prevents leaks. Also it does not allow the flush valve to hit the tank.

This valve gasket is rubber. It is a genuine Briggs replacement part. It will replace the gasket on the flush valve. Therefore if your flush valve is leaking or dripping into the bowl this could be the issue. However if the water is dripping between the tank and bowl, it would be the tank to bowl gasket. 

 All of the parts we offer are genuine. The Briggs B350001 Flush Valve Gasket is a genuine Briggs replacement part. It will replace the old gasket on the flush valve. In conclusion, the B350001 gasket is a genuine part. Therefore any tank number it is listed will fit. The rubber the gasket is made from is very soft. Therefore it is a good seal. 

• Genuine Briggs Replacement Part
• Rubber gasket
• Fits 4140, 4142, and 4143
• for 3 inch flush valve