Why would a technician prefer a split mechanical seal for a pump installation?

A technician would prefer a split mechanical seal for a pump installation primarily because it can be serviced without removing other components of the pump. This feature is particularly advantageous in situations where accessibility is limited, or the pump is installed in a tight space. When maintenance or repairs are required, a split seal allows for quick access to the critical sealing surfaces, enabling the technician to perform necessary adjustments or replacements efficiently. This can significantly reduce downtime and labor costs, making it a preferred choice in many applications where maintenance scenarios are anticipated.

In contrast, the other options may not offer the same practical convenience. While durability, failure rates, and sealing performance are important factors, the unique characteristic of a split mechanical seal allowing for serviceability without disassembly stands out as a key reason for its preference in pump installations.