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  1. sealing the splined joint spider diff

    Gearbox, Transaxle, Differential & Propshaft
    Hi Have a 74 spider. Just replaced diff pinion seal, but noticed that there is some kind of solidified rubber seal material in the gaps of the splined joint. Does anyone know what this is? I guess its there to prevent leak of gear oil, but I have not seen this discussed. Does it have to be...