Placement of big round felt pad on crank behind timing cover

I'm curious about MoparLeo where he says:

"Older engines used to have a large, felt washer installed there."

Installing new timing chain on a 318, questioning the oil slinger

Not sure what he means by "there".

I should have paid more attention when I took my balancer / timing cover off, but I thought the felt washer and slinger disk came off at the same time. I don't recall pulling the felt pad out of the balancer back side, but I'm real hazy about that.

Is there some mopar document / diagram / manual page *anywhere* that actually shows / describes this felt pad? The one that I had in there looks more like jute than felt (the new one that came with the felpro timing gasket kit is definately felt). I won't use if it's supposed to go on the backside of the balancer.