Through-Hull Fittings: Metal, Marelon, Mounting, and ...
2016-7-7 · Through-Hull Fittings: Metal, Marelon, Mounting, and Maintenance. No matter what your through-hull fittings are made of, periodic lubrication and maintenance are key. Through-hull fittings like sink drains and seacocks fall into a group of components that can make the difference between floating your boat and getting that sinking feeling.
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