304098 OMC O-ring

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  • February 23, 2018 at 10:28 pm #9283
    jerry-ahrens
    Participant

      US Member

      I’m working on a 57 Golden Javelin right now, and I need the O-ring that goes in the seal carrier on the lower end of the crankshaft. I show it to be a 304098. I can’t seem to find one anywhere. Anyone know the dimensions of that O-ring? Our local dealer usually has many OMC NLA parts, but no luck there either.

      February 24, 2018 at 12:02 am #71489
      Mumbles
      Participant

        I’m pretty sure, but not positive, that the 304098 O ring has been replaced by 302540, which measures 1 X 1 1/4 X 1/8. Then there’s the later square O rings to replace the round ones.

        February 24, 2018 at 1:06 am #71492
        frankr
        Participant

          US Member

          Use 305098 Quad ring.

          February 24, 2018 at 1:09 am #71494
          frankr
          Participant

            US Member

            OMC/BRP thinks those things are gold. Pay the postage and I’ll send you one free.

            February 24, 2018 at 7:55 pm #71523
            jerry-ahrens
            Participant

              US Member

              Thanks for the replies guys. I did end up locating one of the O-rings finally. Frank, I think I’ll order some of the quad rings you mentioned from Mcmaster Carr.. are they the ones mentioned in the other thread titled ”O-rings do we have a chart”? Thanks!

              February 24, 2018 at 8:57 pm #71525
              frankr
              Participant

                US Member

                I ordered 100 of them by size from mcmaster about ten years ago. Still have a lifetime supply. 1" x 1-1/4" x 1/8"

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