5200 3M sealer is a good product, but with one downfall…. it takes several days to fully cure. Cold makes it take even longer. There is Fast Cure version of the 5200 that dries in 24 hours, if memory serves. Same as the regular stuff, but not quite as strong as the regular 5200 in the blue and white tube. Having said all of that, 5200 is about unbeatable for underwater sealing of boat hulls,
through hull fittings, etc.
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