What is the significance of proper torque when assembling a flange joint on a marine piping system?

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The key idea is preload on the flange bolts and how it affects the seal. When bolts are torqued to the proper value, they clamp the flange faces together with even preload, which compresses the gasket uniformly. This uniform compression creates a tight seal that prevents leaks and helps the joint withstand pressure, vibration, and temperature changes common in marine piping. If torque is too high, the gasket can be crushed, bolts or the flange can distort, and leaks or bolt failures may occur. If torque is too low, the gasket isn’t compressed enough, allowing leaks and risking joint separation. Maintaining the correct torque also helps keep the bolt pattern loaded evenly, avoiding eccentric loading that can compromise the seal. This is what makes proper torque essential—the other ideas don’t address sealing, load distribution, or joint integrity in a marine system.