A reciprocating cylindrical component that creates pressure and flow in pump heads and fluid blocks by moving within a sealed chamber.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Hardness | 50-58 HRC | |
| Straightness | 0.01mm/100mm | |
| Surface Finish | Ra 0.2-0.4μm | |
| Pressure Rating | Up to 1000 bar | |
| Temperature Range | -40°C to 200°C | |
| Diameter Tolerance | ±0.005mm |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
The core fluid-handling component of a precision metering pump that contains the pumping mechanism and fluid pathways.
The core fluid-handling component of a metering pump or valve where fluid displacement and pressure generation occur.
Control component that regulates fluid flow or actuates mechanisms in rejection gates
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
Manufacturer profiles associated with Piston / Plunger.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
Pistons typically use packing rings or seals on the cylinder wall, while plungers use seals on the plunger itself. Plungers generally handle higher pressures (500+ bar) with simpler sealing arrangements.
Replacement intervals depend on operating conditions: typically 2,000-8,000 hours. Monitor for scoring, diameter wear exceeding 0.1mm, or pressure drop >15% as replacement indicators.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.