What type of packing is typically used in API 610 pumps for sealing?

In API 610 pumps, which are designed for high-performance applications in the petroleum and petrochemical industries, Teflon packing is often used for sealing because of its unique properties. Teflon, or polytetrafluoroethylene (PTFE), is known for its excellent chemical resistance, low friction, and stability across a wide range of temperatures. This makes it particularly well-suited for applications involving various hazardous and corrosive fluids that may be present in these types of pumps.

The use of Teflon packing helps to create a reliable seal that minimizes leakage, which is crucial in maintaining safety and operational efficiency within pumping systems. Furthermore, Teflon packing reduces wear on the pump shaft due to its lubricating properties, contributing to extended equipment life.

While other types of packing materials, such as metal, cork, and graphite, may have specific applications and benefits in different situations, Teflon packing's combination of chemical compatibility, thermal stability, and low friction makes it the preferred choice for sealing in API 610 pumps.