Re: [Amel Yacht Owners] Illustration of the Onan Exhaust Elbow Replacement
Bill Kinney <greatketch@...>
James,toggle quoted messageShow quoted text
Now that’s a fun fact! But I guess magnesium hydroxide could be as good a thread lubricant as anything else. Just be sure to use the “unflavored” variety. :-)
I am not aware of any single thread lubricant or anti-seaze that works in every situation on a boat. I generally keep a few kinds in my tool box.
A teflon based product like Tef-Gel for stainless screws into aluminum, and stainless-on-stainless threads under high load.
Lanocote, for lots of general purpose applications.
Marine-grade Never-Seeze for most everything on the engine and any other high temperature applications. Also good for preventing galling with stainless-on-stainless pipe threads.
Blue Loctite for things that need help staying together.
They all do something a bit different from each other, and which one that gets used depends on what I want to happen. Do I want to lubricate the threads to make a tighter joint? Is it a part that gets wet so galvanic isolation important? Is the temperature range unusual? Is it an electrical connection so conductivity needs to be considered? It is really rare that threads get tightened on my boat without something on them.
Just as an aside, one of the things that I find makes my future life happier is anytime I buy a new piece of equipment, especially if it has stainless screws, is I pull all the screws out and lubricate them. A future disassembly then has much less aggravation.
Of course, these are the brands that I use because they are easily available to me, and have been good to me in the past. I am sure there are lots of others that are at least as good.