Mechanical seals are the ideal choice when seal leakage is not an option for equipment or applications. This is usually the case when pump leakage can cause environmental or safety issues. Mechanical seals are much more durable than packing seals and are the better choice for long-term operation of your pumps.
Although mechanical seals can be costlier than packing seals, they are a great investment that can save you the costs of constant packing seal repairs and replacements. When considering gland packing vs mechanical seal solutions, mechanical seals are the best for minimizing sleeve damage.