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<div>Alan,</div><div>I have had good luck with epoxy for potting penetrators in metal fittings. I have pressure tested well past 1,000 psi with good success. Gamma and E3000 both have 20 pin penetrators using casting resin and were pressure tested above 1,000 psi. </div><div>Having said that, I potted my new compass sensor with epoxy and the sensor has failed possibly. I have not investigated completely yet. </div><div>I would have concerns now about potting electronics in epoxy. this is my first time potting electronics, I would recommend buying electronic specific potting material and keep using casting resin or epoxy for power penetrators.</div><div>Hank</div><div><br></div>
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On Thursday, June 13, 2019, 6:20:21 AM MDT, Alan via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div dir="ltr">Jon,<br></div><div dir="ltr">that was one of the most comprehensive "How to" videos I've seen.<br></div><div dir="ltr">Have one of those compasses so will emulate that.<br></div><div dir="ltr">I have reservations about epoxy sealing the wires though.<br></div><div dir="ltr">I did a lot of experiments with glues & PVC wire jackets & found a lot of<br></div><div dir="ltr">the glues disappointing. I found one product specifically for PVC boats<br></div><div dir="ltr">that stood out.<br></div><div dir="ltr">I have mentioned before that I potted a couple of wires for 1" in to a WD40<br></div><div dir="ltr">filled housing & the WD40 just ran out between the epoxy & wire jacket<br></div><div dir="ltr">without pressure. <br></div><div dir="ltr">Under pressure I would guess that the PVC jacket would be more compressible<br></div><div dir="ltr">than the epoxy resin around it & would tear away from it, letting water in.<br></div><div dir="ltr">Suggest epoxying the whole board both sides & the wires where they are <br></div><div dir="ltr">soldered on, in case of water egress.<br></div><div dir="ltr">I have strong reservations about the epoxy sticking to the PVC pipe also.<br></div><div dir="ltr">I would be interested in others opinions on this as potting wires is <br></div><div dir="ltr">something we are doing a lot of.<br></div><div dir="ltr">Alan<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div></div>
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