Lake Martin Topics: BoatDoctor
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My experience is with industrial pumps, but it should apply here, as well. Packing-type seals are designed to leak to some extent, such as a drip or two. This minor leakage is necessary to keep the packing lubricated. If the packing dries out, the friction from the turning shaft will overheat and harden the packing. When that happens, it loses its ability to properly seal, and you'll soon have a major leak. Also, the hardened, non-lubricated packing can damage the shaft (actually roughening up and wearing grooves into the shaft) to the point of making the leak worse, and making it harder to obtain a good seal, even with new packing.
I would strongly suggest re-packing, with new packing. When the packing nut is properly tightened against the packing, you want to still be able to see roughly one quarter to one third of its threads visible, so you have room to tighten further as the packing compresses with use.
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