<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body><div>Alan,</div><div><br></div><div>How about using food grade mineral oil. That way if you have a leak, you have no toxic worries.</div><div><br></div><div>Keith T.</div><div><br></div><div><br></div><div><br></div><div id="composer_signature"><div style="font-size:85%;color:#575757" dir="auto">Sent from my Verizon, Samsung Galaxy smartphone</div></div><div><br></div><div style="font-size:100%;color:#000000"><!-- originalMessage --><div>-------- Original message --------</div><div>From: Alan via Personal_Submersibles <personal_submersibles@psubs.org> </div><div>Date: 6/20/17 5:59 PM (GMT-08:00) </div><div>To: personal_submersibles@psubs.org </div><div>Subject: [PSUBS-MAILIST] Pressure Test Chamber </div><div><br></div></div>I am making a plastic container to fill with water & stand inside my<br>pressure chamber. There is a gap between the wall of the container<br>& the chamber which I intend to fill with oil. There will be about an<br>inch of air at the top of the chamber & I'm using a scuba tank to<br>pressurise the unit up to 3000psi.<br>Will car engine oil do to fill the gap between my plastic container &<br>the chamber wall, or do I need to go with a hydraulic fluid.<br>Am using the plastic container to keep water from rusting my test<br>chamber. (Aussie Steve's idea)<br>Cheers Alan<br><br>Sent from my iPad<br>_______________________________________________<br>Personal_Submersibles mailing list<br>Personal_Submersibles@psubs.org<br>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br></body></html>