While at the Homecoming Event in Valcourt, Ca. I had the fortune to talk with BRP tech services people about finding a replacement seal for the wheel bearings on my 622 trailer. At first he did not understand why I could not find the part number, after he searched the Can Am manual, he discovered that there is not parts lists for the trailer. After about an hour of searching all the on line manuals then the vendors manuals he found a part number. For those who need it, the BRP number is 29325033 and he said the suppliers have them in stock. Mission accomplished.