Gasket Sealer

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  • July 28, 2015 at 12:11 pm #2134
    willyboy
    Participant

      When replacing gaskets on an old outboard is the use of gasket sealer also used to make a leak proof seal? I just finished making a set of gaskets for my 1939 md-39 Johnson for where the carb plate covers the water jacket and was wondering if using some permatex indian head gasket shellac would be a good idea to make sure no water gets thru?

      July 28, 2015 at 2:38 pm #21081
      Michael
      Participant

        International Member - 1 Year (includes $3 online payment fee)

        Personally I do not use any gasket sealer on a gasket. If the gasket surface is in good/decent condition, the gasket should seal it on its own. Plus putting gasket sealer on there makes for a mess the next time the engine is dis assembled.

        July 28, 2015 at 3:34 pm #21083
        Mumbles
        Participant

          OMC/BRP Gasket Sealing Compound or the Mercury equivalent (Perfect Seal) are good to use to help prevent fluid leaks. Certain gaskets, such as head gaskets, usually go on dry.

          July 28, 2015 at 9:00 pm #21100
          billy-j
          Participant

            US Member - 2 Years

            I use the OMC/BRP gasket sealer (sparingly ) on my outboard gaskets. It does not dry really hard I also put it on my screw threads before I install screws or nuts to keep water out. Also I think it really smells good.

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