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Are plastic thru hull fittings OK under water?
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<blockquote data-quote="1957Crestliner12" data-source="post: 340233" data-attributes="member: 13321"><p>People do install plastic below the waterline...even many high-end bass boat manufacturers use to install them for live well pick-ups and drains...not sure if they still do...</p><p></p><p>There are a lot of stories of below the waterline failures with plastic thru-hulls. Plastic is not as forgiving during installation and can crack unbeknownst to the installer, deteriorates over time due to sun and weather, can crack if holding water during freezing temps, can easily crack if a loose object hits it in the bilge during rough boating conditions or trailering, etc...</p><p></p><p>Use stainless steel...yeah it's more expensive, but it's not significantly more money for the piece of mind...and a lot cheaper than salvaging a boat.</p><p></p><p>If you do install plastic below the waterline...which I don't advise...get a set of tapered wooden emergency plugs to keep within reach in case of a failure. These have saved many boats.</p><p></p><p>Rod</p><p>Oriental, NC</p></blockquote><p></p>
[QUOTE="1957Crestliner12, post: 340233, member: 13321"] People do install plastic below the waterline...even many high-end bass boat manufacturers use to install them for live well pick-ups and drains...not sure if they still do... There are a lot of stories of below the waterline failures with plastic thru-hulls. Plastic is not as forgiving during installation and can crack unbeknownst to the installer, deteriorates over time due to sun and weather, can crack if holding water during freezing temps, can easily crack if a loose object hits it in the bilge during rough boating conditions or trailering, etc... Use stainless steel...yeah it's more expensive, but it's not significantly more money for the piece of mind...and a lot cheaper than salvaging a boat. If you do install plastic below the waterline...which I don't advise...get a set of tapered wooden emergency plugs to keep within reach in case of a failure. These have saved many boats. Rod Oriental, NC [/QUOTE]
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Are plastic thru hull fittings OK under water?
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