Sealing temp sensor

pdora

pdora

Senior Member
I have bought a Tapped Water Outlet so I can install a water temperature gauge. The sensor or sender is a 1/8" NPT male and made of brass. The water outlet is tapped for 1/2" NPT and is made of aluminum. I have brass adapter to make the transition.

Question: What to I need to do to prevent leaks? Pipe dope? Teflon tape?

Thanks
 
Anything that normally does the job. Teflon tape, silicone, your favorite permatex sealant. They're all pipe threaded, so it won't take much to tighten or seal.
 
From OP (Original Poster)

The "My House" technology photos picture some of my quirky inventions, experiments and adventures relating to controlling my house, my life and my little corner of the world. Does anyone remember Carl and Jerry?

My only fear is that my car will eventually take on the same look.

The temperature gauge, for example, will actually employ two sensors -- outlet and inlet, so as to monitor not only the block temp, but the efficacy of the cooling system as well.
 
Carl & Jerry....Oh That brings back some fond memories, I think I still have a few copies somewhere.
Its all about having fun !!
 
Being fairly old-school myself, I use either plumbers "white pipe dope" ( mixture of whiting and oil, sometimes with Teflon thrown-in), or black Permatex (non-hardening).

I kind of don't like Teflon tape, maybe because in my years of facility-maintenance, I've seen it used everwhere it SHOULDN'T be... :mad:

Also, when working with tapered piped thread ( more so with brass or thin wall fittings), the Teflon tape can reduce friction enough that the male fitting can be screwed so far in that the female part of the assembly cracks or splits.

When installing my tapped outlet and gauge, I used white pipe dope. After you've run the engine, and things have gotten warm, you can wipe-off any ooze with a rag and mineral spirits.

Let us know what you find with two temp gauges... ( just make sure you keep at least one eye on the road! :D )

:cool: SC Frank
 
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