Neolube 100 is what we used at the power plant on pipe threads.
It would not set up and the threads would come back apart good also.
https://www.newmantools.com/chemicals/neolube100.htm

On engine gaskets, we used Permatex ultra blue.
https://www.permatex.com/products/g...sor-safe-blue-rtv-silicone-gasket-maker/

Don



1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!