Just red oxide primer :) and 3m sealer that dries hard.

floor color
 

The only red oxide primer I found was a bit more orange. No response from anyone else. so I'll just go with what I have. Thanks, for the response.

Sorry, pretty sure it was Rustoleum 2x flat red oxide

Here's a couple pics of my original. I believe the area that Joe showed separated on his floor originally was part of the large pad. Over time that area perforates along a factory seam. If you look at mine you'll see the whole right side is still intact. The area nearest the fuse box ripped when I was taking it out. The pad I bought ended up being an excellent replacement for my needs.

On an a/c pad, it stops before it gets to the heater area. Mine is a/c. Just a FYI...Joe