Home › Forum › Ask A Member › ’58 Big Twin Lower Crank Seal › Re: ’58 Big Twin Lower Crank Seal

#52830
garry-in-michigan
Participant

    The quad ring seals the carbon seal to the crankshaft, and spring pressure leaves a film of oil between the carbon and the bearing. Ware resistant and waterproof. What more could you want? . . . 😀