This gasket came with my Random Cat (vendor-supplied, not Random). It's the turbo outlet gasket. Note that it has no metal compression ring around the inside of the hole. It has taken about 8 months for this to go bad.
I had ordered the VW gasket (which does have the compression ring) but it hadn't come in when I was ready to install the Random Cat, so I went ahead and used this gasket. I discovered the leak Saturday, pulled out the VW gasket and had it in Sunday. Whew! If any of you have used a non-ringed gasket, go ahead and get a ringed one, you'll need it someday...
Heat Shield Sunday 7/6 before gasket gone bad:
Heat Shield Saturday 7/12 after gasket gone bad: