If the wear groove is not too bad, simply order a couple different seals and measure, Most replacement seals put the lip in a slightly different spot. Just use the one that puts it in a different spot. I have taken off high mileage harmonic balancers, axle yokes, and converters that had several wear marks on them. Have used the stainless steel repair sleeves for balancers with good results, have never seen them for converters.