Why are mechanical seals being increasingly installed in pumps?

Mechanical seals are gaining popularity in pump applications primarily because they effectively address issues related to leakage. Unlike traditional packing, which can often allow for a certain degree of leakage to occur in order to maintain lubrication and cooling, mechanical seals are designed to provide a tight seal that significantly reduces this unwanted leakage. This reduction has numerous benefits: it helps prevent environmental contamination, minimizes product loss, and improves operational efficiency.

Moreover, mechanical seals typically require less frequent maintenance compared to packing. While packing requires regular adjustments and potential replacement due to wear, mechanical seals are generally more durable and reliable over time. Their installation may be slightly more involved initially, but the long-term reliability and decreased need for maintenance make them an advantageous choice.

The cost dynamics associated with mechanical seals and packing are more complex, as mechanical seals can be more expensive to purchase initially, but their longevity and reduced maintenance needs often lead to lower overall costs in the long run. Thus, their ability to eliminate undesirable leakage is a significant reason for the trend towards using mechanical seals in pump systems.