1. Working Medium TemperatureHigh-temperature oil pumps are designed for transferring media with temperatures above the auto-ignition point of the oil, typically within the range of 250°C to 450°C.

　　2. Structural compositionHigh-temperature oil pumps typically consist of the pump body, pump cover, inner and outer rotors, pump shaft, and shaft-end assembly seals. The main drive system is composed of a set of intermeshing rotors, with the shaft-end seal using a high-temperature-resistant back-flush type assembly seal. It also employs a water tank cooling method to control the seal temperature.