<div dir="ltr">Hank<div>I have used ss bolts with 2 o rings on the bolts as inserts into my 10 through hull sleeves ,that way I can modify them later for any purpose.</div><div>Glen</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 18, 2015 at 9:20 PM, Sean T Stevenson via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><p dir="ltr">Concur with this. Larger cross sectional diameters offer improved sealing to rougher surfaces, scratches, etc.  The tradeoff is just the depth needed for the gland and consequent size of parts, machining cost, etc.</p>

<p dir="ltr">Sean</p>

<br><br><div class="gmail_quote"><span class="">On March 17, 2015 8:48:06 PM MDT, Hugh Fulton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:</span><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">

<pre><span class="">Brian, Best to use the largest O'ring cross section you feel comfortable with.  You have a bigger tolerance then to wear and machining tolerances etc. Sorry I don't know what the pressures or diameters are that you are dealing with. One of the things that we do is use FS-3452 Fluorosilicon grease which has a great life but compatibility may be an issue to check.  The other thing is to use the oxygen grease which is as slippery as.  Hugh -----Original Message----- From: Personal_Submersibles [mailto:<a href="mailto:personal_submersibles-bounces@psubs.org" target="_blank">personal_submersibles-bounces@psubs.org</a>] On Behalf Of Brian Cox via Personal_Submersibles Sent: Wednesday, 18 March 2015 2:52 p.m. To: Personal Submersibles General Discussion Subject: Re: [PSUBS-MAILIST] thru hulls Right Hugh,  sorry about that, that was the reach on a groover I was looking at.  Hugh do you have any thoughts on whether a smaller size O ring would!

do<span class=""> ? Brian --- <a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a> wrote: From: Hugh Fulton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> To: "'Personal Submersibles General Discussion'" <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> Subject: Re: [PSUBS-MAILIST] thru hulls Date: Wed, 18 Mar 2015 13:26:55 +1300 Hank /Brian 1/8 O'ring is 0.121 depth not .143 for an imperial ring. Make sure you check properly. Chs Hugh -----Original Message----- From: Personal_Submersibles [mailto:<a href="mailto:personal_submersibles-bounces@psubs.org" target="_blank">personal_submersibles-bounces@psubs.org</a>] On Behalf Of Brian Cox via Personal_Submersibles Sent: Wednesday, 18 March 2015 1:19 p.m. To: Personal Submersibles General Discussion Subject: Re: [PSUBS-MAILIST] thru hulls Hank,        Actually the 1/8" O ring calls for a .143 gland depth , and that would be on each side !  The groove cutters I've looked at did not !

go up<span class=""> that high considering the shank has to go in the 1/2" hole.  I'm sure it could be done, and your right about the surface area , but when you consider the tolerance of the shaft to the bore we're only talking about .005 difference or so. Brian  --- <a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a> wrote: From: hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> Subject: Re: [PSUBS-MAILIST] thru hulls Date: Tue, 17 Mar 2015 16:03:35 -0700 Brian, Sorry, my memory failed me, I just measured a spare o ring for the reach rod and it is .100 not .125 so it is a bit smaller.   Hank<hr><span class=""> On Tue, 3/17/15, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:  Subject: Re: [PSUBS-MAILIST] thru hulls  To: "Personal Submersibles General Discus!

sion"<span class=""> <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>>  Received: Tuesday, March 17, 2015, 6:34 PM    Hank,         That is an incredibly deep  groove, and I don't see the reason for it.  I was  considering going with that size but getting a grooving tool  to go .125 thousandths is a long way to go, especially in a  1/2" hole !    Brian    --- <a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>  wrote:    From: hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>>  To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>>  Subject: Re: [PSUBS-MAILIST] thru hulls  Date: Tue, 17 Mar 2015 13:26:57 -0700    Brian,  Gamma has 1/8 orings, I would go with 1/8 might be more  forgiveness.  Hank <hr><span class="">  On Tue, 3/17/15, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>>  wrote:     Subject: [PSUBS-MAI!

 LIST]

thru hulls<span class=""><br>  To: "PSubs" <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br>  Received: Tuesday, March 17, 2015, 3:31 PM<br>  <br>  Hi<br>  All,<br>  Starting in on thru hull production.  I will need<br>  probably close to a dozen of them.  I'm making them<br>  all to accept a 1/2" stainless shaft, and I will be<br>  using 1/16"  O rings.  I don't see any<br>  need to use thicker diameter O<br>  rings ,  since the deeper O ring grooves<br>  can be a bit more problematic.   By the time my<br>  welder finishes all the remaining critical welds I should<br>  have my thru hulls done.   Also working on my<br>  forward hard ballast tank, approx. 18" in dia X 5'<br>  long<br>  .  Cheers, Brian <br>    <br>  <br>  -----Inline Attachment Follows-----<br>  <br><hr><br></span><span class="">  Personal_Submersibles mailing list<br>  <a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br>  <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>  <br> <br><hr><br> Personal_Submersibles mailing list<br> <a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br> <br> <br> <br><hr><br> Personal_Submersibles mailing list<br> <a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br> <br><br><hr><br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br><br><hr><br></span><span class="">Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br> <br><br>__________ Information from ESET NOD32 Antivirus, version of virus signature<br>database 11336 (20150317) __________<br><br>The message was checked by ESET NOD32 Antivirus.<br><br><a href="http://www.eset.com" target="_blank">http://www.eset.com</a><br> <br> <br><br>__________ Information from ESET NOD32 Antivirus, version of virus signature<br>database 11336 (20150317) __________<br><br>The message was checked by ESET NOD32 Antivirus.<br><br><a href="http://www.eset.com" target="_blank">http://www.eset.com</a><br> <br><br><br><hr><br></span><span class="">Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br><hr><br></span><span class="">Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br> <br><br>__________ Information from ESET NOD32 Antivirus, version of virus signature<br>database 11336 (20150317) __________<br><br>The message was checked by ESET NOD32 Antivirus.<br><br><a href="http://www.eset.com" target="_blank">http://www.eset.com</a><br> <br> <br><br>__________ Information from ESET NOD32 Antivirus, version of virus signature<br>database 11336 (20150317) __________<br><br>The message was checked by ESET NOD32 Antivirus.<br><br><a href="http://www.eset.com" target="_blank">http://www.eset.com</a><br> <br><br><hr><br></span><span class="">Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></span></pre></blockquote></div></div><br>_______________________________________________<br>

Personal_Submersibles mailing list<br>

<a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br>

<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>

<br></blockquote></div><br></div>