my part looks different than yours.

Hi there. I'm not exactly sure what you mean by "the back is raised in the diagonal", but this roller's stamped name has been associated with the 23-043 in the past. It certainly looks similar, but you'll need to compare the dimensions, especially the diameter of the wheel and the width and height of the housing, to confirm it's a match. Also see the 23-176 as a secondary possibility. 

Thanks for contacting us. I've placed you in your original discussion from the 24th. Your new photo doesn't really tell us anything your first photo didn't, unfortunately. Did you look over Bob's post? I recommend giving it a read and letting us know as you think. Like he said, the dimensions are the most important part. 

I'm also not sue what you mean when you talk about an angled or diagonal part. Are you talking about how the inner housing is on a pivot? Ours work that way, too.