Paper gasket on axle flange

[Joisey]

Does anyone have an idea why there is a thin paper gasket between the face of the axle flange where the brake drum mounts? At 63, this is a first for me to find on a vehicle. 2018 Tacoma TRD off road V6

 

[texasred]

There were paper gaskets on the transmission/overdrive on my old Triumph Spitfire. I almost think they were used for the pumpkin gasket too. Hard to find so we used grocery bags cut to match. [emoji6]

Edit: That was 90 weight behind it with basically no pressure and they were PAPER grocery bags (remember those?).

 

[Joisey]

Is this possibly something that is unique to my truck model and year? The paper gasket is found on Toyota parts pages, so it's not a factory method to keep the brake drum from sliding off on the assembly line.