You face a classic tradeoff on every pump: balancing leakage, energy, reliability, and upkeep. The mechanical seal vs packing decision shapes all four. If you’re aiming for tight emissions and low energy losses, a properly applied mechanical seal will usually win. If you’re handling abrasive slurries where a little leakage is acceptable, well-chosen packing can still be a smart, rugged option.
Below is a practical comparison tailored for junior pump engineers and students, with selection rules you...
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