This gasket really seals the deal! I've used it on my performance car and it hasn't let me down yet. The seal is tight and it's made of high-quality material that can handle the HEAT of the exhaust system... Plus, the installation was a breeze - it fit perfectly without any need for modification. The only downside is that its a bit pricier than other gaskets on the market, but you definitely get what you pay for in terms of performance and durability..