I used to have the address (no longer) of a shop that welded up the grooved area on full floating axle spindles and then re-milled them to spec. IIRC they did this while the housing was still in place on OTR trucks but required light duty axles to be removed from the vehicle. Try some big rig shops.
You could also try JB Weld or something similar to get a smooth surface. Clean, fill, and sand to shape with fine emory cloth. I have done this on various seal surfaces but never on a high heat/high rpm seal surface.
Usually I smooth slight grooving with a little fine emory cloth and then get every version of the appropriate seal I can find through the various parts sources. Carefully mic the inner seal diameter of each of the brands and use the tightest one. DO NOT distort the seal with your calipers or you will get widely varying dimensions. Just slowly spread the calipers until they barely contact the inner surface. Repeat the process in several places to get a reliable reading. Pick the tightest seal.
You might even get lucky and find a dual-lipped seal in the aftermarket that would work.
You could also try JB Weld or something similar to get a smooth surface. Clean, fill, and sand to shape with fine emory cloth. I have done this on various seal surfaces but never on a high heat/high rpm seal surface.
Usually I smooth slight grooving with a little fine emory cloth and then get every version of the appropriate seal I can find through the various parts sources. Carefully mic the inner seal diameter of each of the brands and use the tightest one. DO NOT distort the seal with your calipers or you will get widely varying dimensions. Just slowly spread the calipers until they barely contact the inner surface. Repeat the process in several places to get a reliable reading. Pick the tightest seal.
You might even get lucky and find a dual-lipped seal in the aftermarket that would work.