[XBob]

also, notice the 'raggady' part of the opening on the right side, that means that is a 'standard' gasket which fits more than one size exhaust port.

such 'imprecision' would never be allowed in a shuttle component.

[Cold Heat]

I just took another look. The ragged area is where it burned out. The dark color appears to be carbon and it probably fell out of a trash truck someplace.

That's what I see.