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Had a stubborn flange that wouldn't seal on a water tube boiler in Akron...
We kept getting a slight weep after a hydro test, and the gasket surface looked clean. Instead of chasing it with more torque, an old hand told me to try a thin coat of high-temp anti-seize on the stud threads only. Did that, torqued it in three steps to 450 ft-lbs like normal, and the weep stopped. It let the studs stretch more evenly, I guess. Anyone else use that trick for high-pressure flanges?
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wright.drew18d ago
Good point, you want it on before you run them in. It also helps a ton if you have to break that joint later. Makes the studs come out clean.
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andrew91618d ago
Wow, did you put the anti-seize on the threads before or after you ran the studs in?
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