Top Entry Agitator Mechanical Seal

Mounting Position That Simplifies Maintenance and Access

The defining feature of a top entry configuration isn't the sealing principle itself — it can be built with wet-running or dry-running faces depending on process needs — but where the seal sits relative to the vessel, which changes how it's serviced and what loads it carries. Mounted above the tank with the agitator shaft passing down through it, the housing has to support not just sealing duty but also some portion of the drive assembly's weight and torque reaction, which is why top entry housings are typically more heavily built than a comparable bottom entry unit. The real advantage shows up during maintenance: technicians can access, inspect, and service the seal from above the vessel without draining or entering the tank, which cuts downtime significantly on turnaround work. For complete step-by-step installation instructions and torque specifications, refer to our detailed installation guide on the blog.