It might have been a metal "shim" style gasket but the modern ones I have seen have a rubber coating on them. When I needed them for my 2 ton LCF I just made them myself from FelPro paper gasket stock. They are not leaking.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
Are you talking about the seal that mates between the axle shaft and hub? They were a tin/lead material called terneplate. Can you give the dimensions? They may be the same as found on deco military trucks.
I make those axle flange gaskets from very soft aluminum sheet metal about .030" thick, using the dimensions of the hub and the bolt hole diameter and spacing as a pattern. They seem to work better and last longer than gasket paper, especially if the flange doesn't have tapered collets that keep the axle from shifting slightly forward and back on the studs. Jerry
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