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<div>Alan,</div><div>You can buy O2 tape that is green, but you can use white tape if the tape does not protrude past the treads. At lest that is what I read. I have used the green stuff, but typically O2 fittings need nothing due to the close tolerance machining of O2 parts.</div><div>Hank</div><div><br></div>
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On Friday, December 29, 2017, 9:05:01 PM MST, Alan via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="yiv6943891047"><div><div>Noticed when visiting Nuytco that they used thread tape on their O2</div><div id="yiv6943891047AppleMailSignature">supply to their bellows add system. Wondered about it at the time as I thought it would be inflammable. There is a high pressure gauge showing here so looks like they are using tape on the high pressure O2 line.</div><div id="yiv6943891047AppleMailSignature">Alan</div><div id="yiv6943891047AppleMailSignature"><br clear="none"></div><div id="yiv6943891047AppleMailSignature"><img id="yiv69438910472306B160-2B97-4A59-B6FE-3D0964772A2C" src="cid:P1PAffNxkHa1Ty7na04a" yahoo_partid="1.2.2" alt="image1.JPG"><br clear="none"><br clear="none">Sent from my iPad</div><div class="yiv6943891047yqt0002652160" id="yiv6943891047yqt09206"><div><br clear="none">On 30/12/2017, at 2:34 PM, Hugh Fulton via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote type="cite"><div></div></blockquote></div></div><div class="yiv6943891047yqt0002652160" id="yiv6943891047yqt14603"><style>#yiv6943891047 #yiv6943891047 --
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#yiv6943891047 </style><div><div class="yiv6943891047WordSection1"><p class="yiv6943891047MsoNormal"><span style="font-size:11.0pt;">Like Brian and Hank,</span></p><p class="yiv6943891047MsoNormal"><span style="font-size:11.0pt;"> Thread tape 2-1/2 turns and anti-seize. Don’t put on too much tape. Don’t leave tape hanging over the thread end as it will end up in the system. Start about ½ a thread back.</span></p><p class="yiv6943891047MsoNormal"><span style="font-size:11.0pt;"> I tried Loctite many years ago with bad results but that was with natural gas. We do high pressure gas for a living. White tape for air and yellow for gas. Yellow is generally thicker. Some cheap white tapes are really thin so compensate.</span></p><p class="yiv6943891047MsoNormal"><span style="font-size:11.0pt;"><a rel="nofollow" shape="rect" target="_blank" href="https://northerncal.swagelok.com/blog/bid/88017/skill-applying-ptfe-tape-to-tapered-pipe-threads">https://northerncal.swagelok.com/blog/bid/88017/skill-applying-ptfe-tape-to-tapered-pipe-threads</a></span></p><p class="yiv6943891047MsoNormal"><span style="font-size:11.0pt;"> </span></p><p class="yiv6943891047MsoNormal"><span style="font-size:11.0pt;">Hugh</span></p><p class="yiv6943891047MsoNormal"><span style="font-size:11.0pt;"> </span></p><p class="yiv6943891047MsoNormal"><span style="font-size:11.0pt;"> </span></p><p class="yiv6943891047MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;">From:</span></b><span lang="EN-US" style="font-size:10.0pt;"> Personal_Submersibles [<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles-bounces@psubs.org" target="_blank" href="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Brian Cox via Personal_Submersibles<br clear="none"><b>Sent:</b> Saturday, 30 December 2017 1:57 PM<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] High Pressure Air System Thread Sealants</span></p><p class="yiv6943891047MsoNormal"> </p><div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;">Steve, I used just Teflon tape and I had some tiny leaks. I would recommend using the Teflon tape and also a viscous product such as Never-seize. I had to back everything out and re-do all my fittings just for piece of mind. In addition the Never-seize is good for stainless to stainless fittings. I didn't have any leaks after that.</span></p></div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;"> </span></p></div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;">Brian</span></p></div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;"> </span></p></div><div><p class="yiv6943891047MsoNormal" style="margin-bottom:12.0pt;"><span style="font-size:10.0pt;"> <br clear="none"><br clear="none">--- <a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:<br clear="none"><br clear="none">From: hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">To: Steve McQueen via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">Subject: Re: [PSUBS-MAILIST] High Pressure Air System Thread Sealants<br clear="none">Date: Sat, 30 Dec 2017 00:02:14 +0000 (UTC)</span></p></div><div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;">Steve,</span></p></div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;">Tread tape has worked reliably for me for many years and projects. I tried a liquid product one time and it was garbage.</span></p></div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;">Hank</span></p></div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;"> </span></p></div><div><div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;">On Friday, December 29, 2017, 4:14:23 PM MST, Steve McQueen via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote: </span></p></div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;"> </span></p></div><div><p class="yiv6943891047MsoNormal"><span style="font-size:10.0pt;"> </span></p></div><div><div><div><div><p><span style="font-size:10.0pt;">All, I am starting to plumb together my K250 HP Air distribution system (3,500 psi). Looking for feedback. </span></p></div><p><span style="font-size:10.0pt;">For the NPT connections I am choosing a LOCTITE product:</span></p></div><p><span style="font-size:10.0pt;"></span></p></div><p><span style="font-size:10.0pt;">I’ve read Teflon tape technically isn’t the best for HP applications but I’ve seen it used. Anyone have a proven best practice?</span></p></div><p><span style="font-size:10.0pt;">Thanks,</span></p></div><p><span style="font-size:10.0pt;">Steve </span></p></div></div></div><p class="yiv6943891047MsoNormal">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none">_______________________________________________ Personal_Submersibles mailing list <a rel="nofollow" shape="rect">Personal_Submersibles@psubs.org</a> <a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a> </p></div><blockquote type="cite"><div><span>_______________________________________________</span><br clear="none"><span>Personal_Submersibles mailing list</span><br clear="none"><span><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br clear="none"><span><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br clear="none"></div></blockquote></div></div></div><div class="yqt0002652160" id="yqt86974">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div>
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