In the pulp and paper industry, the refiner (or defibrator) is the most punishing environment for a mechanical seal. Between the high torque required to process wood fibers and the significant axial movement of the refiner plates, standard seals often suffer from premature face wear, vibration damage, or catastrophic leakage. For those utilizing Sulzer® refiners, finding a seal that can actually survive these conditions is a top priority.
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