Home › Forum › Ask A Member › ’58 Big Twin Lower Crank Seal › Re: ’58 Big Twin Lower Crank Seal
February 11, 2017 at 4:16 pm
#52830
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? . . . 😀

