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Compass Marine How To | all galleries >> Welcome To >> Installing A Seacock & Thru-Hull Fitting In A New Location > Thread It In
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Thread It In

Thread It In

The thru-hull is then threaded into the seacock. It's important to dry fit test everything first to make sure you've cut the thru-hull to the proper length and that everything fits perfectly. Do this before applying the marine sealant.

I generally use Sikaflex 291 for below water applications.

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Peter Hammond 25-Nov-2016 17:46
I am installing a Thru-hull for a cockpit scupper in my transom, well above the waterline. Should I still use 291?