Review on Walker Exhaust 31639 Exhaust Pipe Flange Gasket: Reliable Seal for Optimal Exhaust Performance by Jose Smith

No leaks yet, bought because the one that came with the exhaust had a thin wire mesh on the outside that started to fray after trying to fit the pipe well. Next time I'll use high temp sealant and coat the whole thing before installing just in case. Try deburring the pipe first, it goes through but in my case it wasn't possible as the car was very low on the bushings and you can do so much with just one hand.