In theory, yes, as a practical matter, not a good idea. Turbo seals aren't seals in the o-ring sense. They're more like piston rings. If they're worn to the point they're blowing chunks, then the bearings may be shot as well, and that means there's a good chance than the compressor wheel has been damaged or the shaft is worn. Repair may require machine work to the capsule, replacement of the impeller or compressor and most important, balancing. You'll also need a few gadgets that aren't in your toolbox, like 16" snap ring pliers. So while it's true that the work is simple, there's plenty of room for complication.