Accel exhaust gasket
 

I was working on the car and noticed an exhaust leak.
It's a 1990 Camaro 5.7 with an Accel dual cat. exhaust system from the mid 90's.
When I had the exhaust coated a few years back I made the gaskets.
Only a couple hundred miles and the material has gotten brittle and is falling apart.
Called Lingenfelter and they said they do not carry anything for Accel.
I'd like to get the correct gaskets if possible, if not what is a good material to make them from?

Thanks

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