<font color='black' size='3' face='Arial, Helvetica, sans-serif'>
<div><font size="3"><br>
</font></div>
<font size="3">We used to use a synthetic based product with inorganic thickeners that had good temperature and high pressure resistance. It resists water washout and provides excellent rust protection. Looking today on the net, I think maybe Crystal Blue Grease might be the stuff. It was blue, true enough. And about forty bucks a pound back in the day. But man, does it work!</font><br>
<font size="3">Vance</font><br>
<br>
<div style="font-size: 10pt; font-family: helvetica, arial; color: black;">-----Original Message-----<br>
From: Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org><br>
To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br>
Sent: Thu, Aug 6, 2015 10:27 am<br>
Subject: Re: [PSUBS-MAILIST] Viewports - steel or stainless<br>
<br>
<div id="AOLMsgPart_1_1f0ab606-302f-4f87-abce-e8230a31abb9">
<div class="aolReplacedBody">
<div style="font-family:Arial, sans-serif; font-size:10pt;">
<div>
Hi Vance,
</div>
<div>
I assumed all grease was non-soluble , where would one find this type of grease?
</div>
<div>
</div>
<div>
Brian
<br>
<br>
--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:
<br>
<br>
From: via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>
<br>
To: <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>
<br>
Subject: Re: [PSUBS-MAILIST] Viewports - steel or stainless
<br>
Date: Thu, 6 Aug 2015 07:38:11 -0400
<br>
<br>
</div>
<font color="black" face="Arial, Helvetica, sans-serif" size="3">
<div>
<font size="3" style="color: black; font-family: Arial, Helvetica, sans-serif;">Andre,</font>
</div>
<div>
<font size="3"><font face="Arial, Helvetica, sans-serif">Steel will be fine with the maintenance you suggest. Be sure to use a non-soluble grease. And the good news is that SS bolts won't gall as a rule in high carbon steel. As proof, I offer the Perry subs, which have without a doubt done more dives in salt water than all other submersibles put together. And every one of them has hull matched steel inserts for viewport and penetration plates. We painted everything, sanded the mating surfaces smooth, and went on about our business. No problem. Even those shiny hatch mating surfaces you see in the pictures or Perry boats are A537 or A516Gr70 steel with monel cladding, rather than the softer and more damage prone stainless. Plus, stainless can have stress corrosion problems in oxygen starved atmospheres, and takes a lot of experience to use effectively.</font></font>
</div>
<div>
<font size="3"><font face="Arial, Helvetica, sans-serif">Vance<br>
</font></font>
<br>
<br>
<div style="color: black; font-family: helvetica, arial; font-size: 10pt;">
-----Original Message-----
<br>
From: André Eriksen via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>
<br>
To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>
<br>
Sent: Thu, Aug 6, 2015 6:27 am
<br>
Subject: [PSUBS-MAILIST] Viewports - steel or stainless
<br>
<br>
<div>
<div>
<div dir="ltr">
Hi,
<div>
<br>
</div>
<div>
Is steel or stainless mostly used for viewports?
</div>
<div>
Have you had any problems with rust in the threads when using steel and diving in saltwater?
</div>
<div>
<br>
</div>
<div>
I would imagine filling the threads with grease, and inspecting them on a regular basis should be fine.
<br>
</div>
<div>
<br>
</div>
<div>
Was hoping I could go with steel, as I can get them cut out from the same plate as the frontdome seat.
</div>
<div>
<br>
</div>
<div>
<br>
</div>
<div>
Thanks,
</div>
<div>
André
</div>
<div>
<br>
</div>
<div>
<br>
</div>
<div>
<br>
<div>
<br>
</div>
</div>
</div>
</div>
</div>
<div style="margin: 0px; color: rgb(0, 0, 0); font-family: Tahoma, Verdana, Arial, Sans-Serif; font-size: 12px; background-color: rgb(255, 255, 255);">
<pre style="font-size: 9pt;"><tt>_______________________________________________
Personal_Submersibles mailing
list
<a target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<a target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a>
</tt></pre>
</div>
</div>
</div>
</font>_______________________________________________ Personal_Submersibles mailing list
<a target="_blank" href="about:blank">Personal_Submersibles@psubs.org</a>
<a target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a>
</div>
</div>
</div>
<div id="AOLMsgPart_2_e7353121-c25b-42b6-ba30-242db0a4509f" style="margin: 0px;font-family: Tahoma, Verdana, Arial, Sans-Serif;font-size: 12px;color: #000;background-color: #fff;">
<pre style="font-size: 9pt;"><tt>_______________________________________________
Personal_Submersibles mailing
list
<a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a>
</tt></pre>
</div>
<!-- end of AOLMsgPart_2_e7353121-c25b-42b6-ba30-242db0a4509f -->
</div>
</font>