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An exhaust flange is a device used to attach an exhaust pipe to an exhaust manifold or another piece of exhaust pipe. Commonly designed to sandwich an exhaust gasket between the exhaust manifold and the exhaust pipe, the exhaust flange is manufactured to an exact angle to eliminate the chance of any exhaust leaks when tightened.
A popular category of pipe flange is the blind flange. A blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. This blind flange is available in various sizes and materials and is used to provide positive closer on the ends of pipes, valves or equipment nozzles.