Uh-oh... mystery 727 part in pan?

If you have a deep pan. It looks like one of the three spacers for the filter extension.

I second the above, my deep pan had hollow tube spacers for the filter.

You guys are great. Just pulled out my old spacer and guess what... it’s missing one. It must have slipped when I was unbolting the filter and somehow hung up somewhere. Crisis averted!