Prop seal orientation on 1969 Mercury 35 hp

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  • March 17, 2025 at 10:29 am #294699
    ChrisAF
    Participant

      Hi Everyone,

      I’ve search to the end of the internet and I can’t seem to find the answer to this question, so I’m turning to you,  the experts!

      What is the proper orientation of this prop seal? Part number 26-90562. Please see pictures labeled “Side 1” and “Side 2” for clarity. The old seal was oriented with “Side 2” facing aft (water side).

      Every thing I’ve found on this topic is in reference to an outboard with 2 prop seals, but I cannot find definitive guidance on the orientation of a single prop seal.

      Thanks in advance for your help!

      March 17, 2025 at 1:32 pm #294707
      seakaye12
      Participant

        US Member

        I believe that I’ve heard it said that;  generally speaking,  the “open” side of the seal….with the spring….typically faces the fluid you want to contain.

        1 user thanked author for this post.
        ChrisAF
        March 17, 2025 at 3:17 pm #294717
        ChrisAF
        Participant

          That’s the general guidance I keep seeing. I’ll go with that. Thanks!

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