Gasket behind the backing plate?

[aquifer]

I am assembling the rear axles on my 67, getting ready to install the backing plates. I don’t remember if there was a paper gasket between the backing plate and the bearing housing. So, BEHIND the backing plate is what I’m asking about.

Bentley does not show a gasket there but my seal kit contains two gaskets per side. Why would there not be a gasket back there? It seems like the same oil being retained by the bearing cover gasket is the same oil that could sneak around and leak from behind the backing plates.

I feel like I’m missing something obvious, so any advice is appreciated. I wish I’d paid more attention to whether there was a gasket behind the backing plate when I disassembled it.

Thank you!

Edited to add two pictures. The explosion diagram doesn’t show the gasket in question, but the text seems to imply the presence of it. See my underline below. It seems to refer to two different paper gaskets.

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Current hobby vehicles:
1967 Beetle
1973 Beetle
1998 Jaguar XJR, restored myself, in near-immaculate condition

[scrivyscriv]

I think the other gasket is so you can use the same seal kit on a bus, which uses RGBs inboard of the backing plate
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Robert in Memphis
Dünkelgrügen 1967 Java Green bug thread
Engine rebuild thread
If you're ever in the Memphis area, you are welcome to stop by for advice and help.

[aquifer]

Thank you. I think I’ve realized that the large o ring that goes over the bearing will keep oil from getting back there. The bus hubs must be designed a little different.

One other thing I learned yesterday is that I needed to put the spacer and drum on without the o rings or the bearing cover, and tighten the castle nut down a bit. This ensures that the bearing is slid all the way in place on the shaft. Or more accurately, it pulls the shaft out through the bearing until it is seated properly against the inner spacer. I learned this as I was tightening down the outer housing, and I suddenly couldn’t turn the drive shaft by hand. The spacer was tight against the oil deflector washer and wouldn’t let the shaft turn. So I took the housing and o rings off, put the spacer and drum on, and gently cinched it up. No damage, but something to keep in mind if anyone stumbles across this in the future.
_________________
Current hobby vehicles:
1967 Beetle
1973 Beetle
1998 Jaguar XJR, restored myself, in near-immaculate condition