<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div><span>Brian,</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1466850012023_3903"><span id="yui_3_16_0_ym19_1_1466850012023_3904">The boat shaft seal is a low pressure version of a mechanical seal. Just google mechanical seal or cartridge seal. That is what I have in my thrusters-if your building a thruster housing with some size to it they are ideal. The smallest I have seen are what I have at 7\8 shaft size and 1 1\8 seat size. If your building from scratch, they would be the way to go. I bought my seals on </span>eBay as new old stock for 200 dollars for the pair. I would find seals like that for cheap and build the shaft etc to suit the seals. No need for oil filling or pressure compensating of any type with these seals.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1466850012023_3903">Hank</div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Friday, June 24, 2016 10:29 PM, Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv1994056334"><div style="font-family:Arial, sans-serif;font-size:10pt;"><div>Hi All,</div><div> I was wondering if anyone is familiar with the PSS shaft seal system. I've been working on my support boat ( 30' Islander sailboat) , I'm about ready to haul it out for a bottom painting job and I'm planning on replacing the shaft seal at the same time with the PSS shaft seal. I think it might have some application to a sub motor shaft seal except it would have to be modified. The seal occurs between a flat carbon piece and a flat stainless piece. On a sailboat of course there is hardly any pressure so it a different situation. But the part that intrigues me is the stainless riding on the carbon as the point of friction for the turning shaft. This would eliminate using O rings to make the seal , where the o rings could fail. There would need to be a certain amount of pressure applied to the carbon and stainless pieced but assuming the motors are pressure compensated or oil filled I don't think that would be an issue. As I haven't entered the "motor phase " of my sub I haven't followed the seal discussions too intently so I may be all wet about this ( can only do one thing at a time!) </div><div> </div><div>Anyway , check out these units, I'd be curious if anyone thinks they may have an application.</div><div> </div><div> <a rel="nofollow" target="_blank" href="http://www.shaftseal.com/en/about/installation_videos">http://www.shaftseal.com/en/about/installation_videos</a></div><div> </div><div> </div><div>Brian</div></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" 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><br></div> </div> </div> </div></div></body></html>