Good thread sealant
 

What's a good plumbers thread sealant for a 90* elbow (thread) on a Imco manifold. the manifold is aluminum and the elbow is stainless.
It's not exceedingly high temp.......it's a water jacketed exhaust manifold and the 90* elbow attaches to coolant hose....is there such a thing
as a marine teflon tape???

Permatex High Temp thread sealant

^ What he said.

Thats a thread locker too, so might not be what you are looking for. In that case something like this http://www.downwindmarine.com/Permatex-Thread-Sealant-with-PTFE-p-91000994.html

it mentions salt water, has lasted for years on my boat and still comes apart easily. (stir it up good if it's been sitting a long time)

https://www.plantengineering.com/sin...2235def2053cec.

Thanks for all the insight.....I went with the Bostik never seez pipe compound w/teflon. I like the properties and because of the galvanic issue....ss to aluminum

WTF does that mean?

(Forum) Thread Locker

It was a joke locking OSO threads:lolhit:

Took me slower than a sloth to get it...lol

this use to be the standard for marine and bike fuel fittings years ago, among other fittings. Actually surprised it has never been brought up here.

Gasoila Chemicals Quick & Easy Sealant Reference Guide

Great reference there!

My buddy (a career boat mechanic) swears by Mercruiser Perfect Seal.

....

I can only speak in the past - the best on the market. I am sure many others currently are good as well. Every marine gas tank manu in the past especially plastic gas tank manus - all the directions were to use this stuff here,

I`ve been using it on drive o rings, cooler and drive gaskets, and any lower pressure threads and it`s fantastic. gaskets no longer tear when you take things apart and can now be reused (bellhousing cooler gaskets)
It`s my new go to .

Thats my Franks Red Hot. I put that $h!t on everything I take apart/put back together!