This high-purity alumina ceramic plunger is made from 95%–99.7% Al₂O₃ ceramic and is mainly used in metering pumps, dosing systems and precision fluid control equipment. It offers good wear resistance, chemical stability and a smooth working surface for long-term pump operation.
View more related products in our Ceramic Pump Components category.
For higher-pressure applications, please see our High-Pressure Pump Ceramic Piston / Plunger.
Standard samples usually take 20–35 days after drawing confirmation. Customized sizes, polished surfaces or special structures usually take 35–50 days.
You can send us your drawing for a quick review and quotation.
The High-Purity Alumina Ceramic Plunger for Metering Pumps is designed for clean, accurate and stable liquid delivery in metering pumps, dosing pumps and precision fluid control equipment. This product is different from general high-pressure pump ceramic plungers. It focuses more on high-purity alumina material, smooth surface finish, stable dosing performance and clean liquid contact.
Made from 95%–99.9% alumina ceramic, this ceramic plunger provides good wear resistance, chemical stability and a non-rusting working surface. It is suitable for applications where metal plungers may cause wear, corrosion or contamination during long-term liquid handling.
For more pump-related ceramic components, please visit our Ceramic Pump Components category. If your application requires heavy-duty pressure resistance, you can also compare it with our High-Pressure Pump Ceramic Piston / Plunger.
This product is mainly manufactured from high-purity alumina ceramic. Alumina ceramic is widely used for metering pump plungers because it offers a hard, smooth and chemically stable working surface for repeated sliding contact.
CERAMPRO can help select the suitable alumina grade based on liquid medium, working conditions, tolerance requirements and production quantity.
This alumina ceramic plunger is mainly used in systems where liquid needs to be delivered accurately, consistently and cleanly. It is especially suitable for metering, dosing and dispensing applications.
If your project involves clean liquid handling, chemical dosing or precision dispensing, CERAMPRO can provide custom alumina ceramic plungers based on your drawings or samples. You can send us your drawing for a quick review.
| Parameter | Technical Indicator | Application Value |
|---|---|---|
| Material Purity | 95%–99.9% Al₂O₃ | Different alumina grades are available for dosing, metering and clean liquid handling applications. |
| Recommended Grade | 99.7%–99.9% Al₂O₃ | Recommended for high-cleanliness, precision dosing and long-service pump applications. |
| Vickers Hardness | 18–22 GPa | Helps reduce wear during repeated sliding movement. |
| Surface Finish | Ra ≤ 0.1 μm, mirror polished | Supports smoother sliding contact and stable sealing performance. |
| Cylindricity | ≤ 0.005 mm | Helps maintain stable movement in metering pump assemblies. |
| Compressive Strength | > 2100 MPa | Provides reliable mechanical strength for repeated pump operation. |
| Water Absorption | 0%, gas-tight structure | Helps prevent liquid penetration into the ceramic body. |
Note: The above values are typical reference data for alumina ceramic materials. Final specifications can be adjusted according to material grade, drawing tolerance, surface finish and actual working conditions.
CERAMPRO supports custom production for alumina ceramic plungers used in metering pumps, dosing pumps and liquid dispensing systems. We can manufacture according to customer drawings, samples or application requirements.
To start a project, please provide drawings, quantity, material requirements, tolerance, surface finish and working medium. You can contact us through the CERAMPRO contact page.
A high-purity alumina ceramic plunger is mainly used in metering pumps, dosing pumps, liquid dispensing equipment and precision fluid control systems that require stable liquid delivery and clean material contact.
This product focuses on high-purity alumina material, clean liquid handling and accurate dosing applications. A high-pressure pump ceramic plunger usually focuses more on pressure resistance, impact load and heavy-duty pump operation.
Alumina ceramic provides good hardness, wear resistance, chemical stability and a non-rusting surface, making it suitable for repeated sliding movement in liquid dosing equipment.
CERAMPRO can provide 95%, 99%, 99.7% and 99.9% alumina ceramic materials. For clean liquid delivery and precision metering applications, 99.7%–99.9% alumina ceramic is often recommended.
Yes. The working surface can be precision ground and polished. For suitable structures, a mirror-polished surface with Ra ≤ 0.1 μm can be achieved.
Yes. CERAMPRO can customize outer diameter, length, hole position, chamfer, groove, end structure and surface finish according to customer drawings or samples.
Yes. High-purity alumina ceramic has good chemical stability and is suitable for many chemical dosing pump and metering pump applications.
It can be used in clean liquid handling applications, but final suitability should be confirmed according to the specific liquid, cleaning process and equipment requirements.
Please provide drawings, material grade, quantity, tolerance, surface finish, liquid medium and application details. This helps us evaluate the manufacturing process and quotation more accurately.
Standard samples usually take 20–35 days after drawing confirmation. Customized sizes, polished surfaces or special structures usually take 35–50 days depending on machining difficulty and order quantity.
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