Plunger Rod

Made from high-purity aluminum oxide (Al2O3) single crystal, the sapphire plunger rod undergoes oriented cutting and precision grinding to achieve a mirror-like surface finish and micron-level straightness. It enables precise, repeatable metering under high-pressure, high-frequency reciprocating conditions, with wear life significantly exceeding that of cemented carbide, making it a core motion component in precision microfluidic control.