I've found that wheel seal measurements can vary by a small amount, especially the outer diameter. I had to return a set because the outside diameter was off by about .010" from a stock seal. Fortunately I have an account with my local auto parts store that is independently owned and has a wider choice of where they can get parts, and more knowledged parts guys than the franchise stores, so there was no problem in getting the correct size seal. Because of this issue, I recently bought on eBay a vintage assortment of wheel seals, so I'll have better luck when I need a seal. I'll have several sizes to go through and try, and the boxes have the part numbers on them. This will make my life easier as I have four campers, four utility trailers, and a boat trailer. You need to find a parts store where they can measure a seal and have the books to look up what you need.
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