Decades ago while hand-threading five stories of 1″ steel pipe, a gas company employee shared a great product with me. His fancy blue pipe dope to apply to pipe threads before screwing everything together. Back in those days, I used grey pipe dope, or more often, white dope with teflon. The blue stuff? An expensive specialty item.
That gas company guy said they used only the blue stuff. It was the best. Pipes never leaked. You did not have to tighten pipe like Hercules to get a good seal. After my gifted can was empty, I bought another. Two decades later I still buy the same pipe dope, Oatey MEGALOC. Sometimes an even stronger product, Oatey Block, for larger or irregular pipe as well as specialty applications. Made in the USA for professional plumbers worldwide.
MADE IN USA / HECHO EN EE.UU.
Even if you are not a professional, just a guy who knows a lot about pipes, do yourself a favor. Get an edge on every project. The upper hand on potential issues. Oatey MEGALOC and BLOCK, their Blue Wonders.
MEGALOC cleans up with water. BLOCK requires isopropyl alcohol.