Shims for axle housing bearing races

[Roger V]

Does anyone know of a source for pre-cut shims (donut shaped) to go behind the bearing races in the axle housings. To be clear, I'm NOT talking about the tapered shim for the end of the axle shaft. Also, I'm NOT referring to the available shim that goes behind the bearings on the carrier. Ideally, they would be 3.125 OD x 2.75 ID inches or near. (.005 or .010 inch thickness would be good.) I've Googled to no avail. Also, my local commercial truck garage hasn't had any luck. TIA, Roger