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Can someone confirm the correct installation/placement of the exhaust pipe flange gasket for a '48 288?

Does it simply sandwich in between the exhaust manifold and the exhaust pipe? There are no holes in the gasket to keep it in place.

I placed the one that came with the intake/exhaust gasket kit in between the exhaust pipe and the manifold and tightened down the flange to keep it in place. Either I didn't tighten properly or it wasn't centered as it ended up shifting after a number of miles and ultimately blew out.

Excuse my ignorance here, I feel silly asking, but I must be missing something. I am about to order a fresh one and want to make sure I do it right this time.

Thank you for any guidance.

The original downpipe extended through the mounting flange and slightly into the exhaust manifold. The ring gasket would stay centered on that extension. You can either insert a short piece of pipe into your downpipe and tackweld it into place, of find a gasket with ears that will be located on the manifold studs.

Excellent, thanks Ross!