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JONATHAN C. SMITH
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    Another A25 lower unit question.  Is there any kind of o-ring or gasket that goes between the water pump housing and the lower unit?  When the water pump is seated in the lower unit housing, and the set screw is seated, there seems to be the potential for water to enter around the water pump housing where it enters the lower unit.  What is supposed to seal this area, grease?  Thanks Jonathan