In thermal fluid systems, pumps serve a critical purpose: to circulate heat transfer fluid to users, driving production processes in a multitude of industries such as engineered wood production, chemical manufacturing, oil and gas processing, and many more. Yet, beneath this essential function lies a consistent operational risk: mechanical seal failure.
While many plant teams focus on managing heat transfer fluids and fire suppression systems, the pump seal remains an often-overlooked point of vulnerability. When it fails, the result is rarely minor—it can cause thermal oil fires, extended downtime, and severe equipment damage.
A mechanical seal in a thermal fluid pump prevents hot oil from leaking at the point where the rotating shaft passes through the pump casing. These seals endure constant friction, pressure, and temperature fluctuations.
Each of these stages can be detected and prevented—but only if monitored consistently.
According to the National Fire Protection Association (NFPA), pump seals are among the top ignition points in thermal oil systems. Once ignition occurs, cleanup can take days and operational recovery weeks.
A single pump failure can cost a facility tens of thousands of dollars in lost productivity and maintenance. The true cost extends beyond equipment replacement—it impacts safety, output, and reputation.
Many operators assume that plant-wide fire suppression systems are enough to protect against thermal oil fires. The reality is different
