Tom, The threaded connection will probably need a bench vice and a pry bar/crow bar to assemble and align. As for the goop, the threaded part should never be hot to touch so any typical sealant will be fine.
Also consider that pipe dope or teflon tape doesn't actually create a seal. A NPT fitting has threads that are not parallel. As such the metal to metal interface gets tighter and seals better the more you turn it. Teflon tape and pipe dope are really just lubricants which reduce the friction and allow an even tighter connection. I work in an industrial plant that has thousands of pipe caps and NPT fittings. If one leaks we just tighten it until it stops...usually without any sealant. I did the same thing for the exhaust riser on my 3HM35F except that I had some cutting oil sitting around and applied that first. My threaded coupling was bronze. If for some reason yours is stainless then it will be imperative that you lube the threads in order to prevent galling. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Wed, Jan 8, 2020, 8:59 PM Tom Buscaglia via CnC-List < cnc-list@cnc-list.com> wrote: > I received by new stainless mixing elbow for my Yanmar HM35F. It has a > reverse threaded connector between the elbow and the header that attaches > to the exhaust output from the engine. The one I took out has some black > goop on the connecting threads which I am guessing helps seal the > connecting thread like silicon tape does on water pipes. > > Any idea what this stuff is? Any other helpful hint on the install of the > new elbow is appreciated. > > This is the last piece of the raw water system that I have looked at to > fix my "no water out the exhaust" issue. Intake not plugged, impeller is > fine, the heat exchanger was wide up and surprisingly clean and the > anti-syphon is clear. The elbow was carboned up. If that douse not clear > the problem, then is must be the hose between the intake and the strainer > collapsing inside because it looks fine on the outside... > > Tom B > > .¤º°`°º¤,¸¸,¤º°`°º¤¤º°`°º¤,¸¸,¤º°`°º¤. > Tom & Lynn Buscaglia > SV Alera > C&C 37+/40 > Vashon Island WA > (206) 463-9200 > www.sv-alera.com > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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