95% Density Zirconia Plunger for Acid/Base Chemical Pump – OD 10mm, Length 100mm

This zirconia plunger is a ceramic rod-style component used in high-precision metering systems requiring robust, wear-resistant, and chemically inert parts. Customized sizes, shapes, and purity are available.

Catalog No. AT-NC3-001
Material  ZrO2
Density 6.2 g/cm³
Particle Size Tolerance  ±0.05 mm (Custom Fractional Sizes Available)
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Zirconia plungers are advanced ceramic components engineered for precision liquid dosing systems, ensuring dimensional stability, high wear resistance, and compatibility with corrosive fluids. Suitable for use in metering pumps, fluid delivery devices, and high-pressure syringe pumps.

Zirconia Plunger Benefits

  • Consistent Dimensional Stability: Resistance to deformation under pressure and temperature ensures consistent metered dosing.
  • Superior Wear Life: Hardness (HV > 1200) and low porosity reduce maintenance replacement costs over time.
  • Chemical Resistance: Inert response to acids, bases, and solvents, allowing use in complex chemical dosing scenarios.
  • Surface Finishing: Ra < 0.2µm ensures minimized abrasion against mating components and improves seal longevity.
  • High Thermal Shock Reliability: Tolerance to sudden thermal changes, ideal for controlled-temperature fluid systems.

Zirconia Plunger Specifications

 

Zirconia Plunger
Item NO. Diameter(mm) Surface Roughness of Rod(μm) Surface Roughness of Slope(μm) Roundness(mm)
AT-YHG-ZS001 2.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS002 3.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS003 4.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS004 5.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS005 6.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS006 7.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS007 8.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS008 9.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS009 10.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS010 11.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS011 12.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS012 13.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS013 14.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS014 15.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS015 16.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS016 17.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS017 18.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS018 19.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS019 20.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS020 21.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS021 22.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS022 23.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS023 24.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS024 25.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS025 26.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS026 27.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS027 28.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS028 29.00±0.001 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS029 30.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS030 31.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS031 32.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS032 33.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS033 34.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS034 35.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS035 36.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS036 37.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS037 38.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS038 39.00±0.002 Ra0.1 Ra0.2 ≤0.002
AT-YHG-ZS039 40.00±0.002 Ra0.1 Ra0.2 ≤0.002

 

 

Packing:

  • Packed in anti-static ESD bags
  • With foam separators in Export-grade rigid cartons

 

 

Zirconia Plunger Properties

Property Pure Zirconia (Monoclinic) - Unstabilized Yttria-Stabilized Zirconia (YSZ) Magnesia-stabilized zirconia (Mg-PSZ)
Typical Purity High-purity raw material, but unstabilized for the final product High purity High purity
Crystal Phases (at RT) Monoclinic (stable up to ~1170°C); Tetragonal and Cubic at higher temperatures. Primarily, Metastable Tetragonal can have a Cubic phase. Partially stabilized with tetragonal precipitates in a cubic matrix.
Density (g/cm³) 5.65–6.05 5.85-6.1 ~5.7
Melting Point (°C) ~2700-2715 Very High (similar to pure zirconia, but phase stability is key) Very High
Thermal Conductivity (W/m·K) Low (approx. 2-3) Low (approx. 2.5-3) Low (approx. 3)
Thermal Expansion Coefficient (10⁻⁶/K) ~10 9.5-10 10
Flexural Strength (MPa) Poor (due to phase transformation and brittleness) Up to 1000, 710-900 500
Compressive Strength (MPa) Not typically used structurally ~2000 ~2500
Fracture Toughness (MPa·m^0.5) Low (inherently brittle) Up to 10 (exceptionally high for ceramics due to transformation toughening), 8-9 6
Hardness (Vickers, HV1) Moderate 11-13 GPa, 1100-1220 kg/mm² 1100 kg/mm²
Chemical Inertness Excellent in acids and alkalis Excellent Excellent
Biocompatibility Generally good, but stabilized forms are preferred for medical use Excellent, widely used in dental and medical implants Good
Typical Applications Refractories (at high temperatures) Structural ceramics, dental implants, oxygen sensors, cutting tools, thermal barrier coatings Refractories, structural components requiring specific thermal properties

Applications of Zirconia Plungers

  1. Metering Pumps for Water Treatment

In automated dosing systems that meter aggressive liquids (acidic or alkaline buffers), the zirconia plunger resists corrosion and delivers exact volume dosage without degradation. Its smooth surface reduces the wear rate of the plunger seal.

  1. Pharmaceutical Filling Devices

In microfillers used for precise liquid dosage in drug production, the ±0.01 mm tolerance of our zirconia plunger minimizes pulsation and dead volumes, thereby enhancing product consistency and regulatory compliance.

  1. Medical Infusion and Syringe Pumps

In infusion pumps where low friction is essential for flow control accuracy, zirconia plungers minimize wear even during high-cycle operation, ensuring long-term stable performance.

Usage Instructions of ZrO2 Plungers

How to Use, Store, and Maintain Zirconia Plungers

  1. Installation
  • Always align plungers with the corresponding chamber bore using guide tools.
  • Avoid direct metal hammering; use ceramic-compatible pushing tools.
  1. Cleaning
  • For chemical exposure: soak in neutral detergent, rinse with deionized water.
  • Avoid using abrasive tools; use microfiber cloths to avoid scratching the polished surface.
  1. Storage
  • Keep in a dry, vibration-free environment. Avoid extreme humid zones.
  • Store in designated ceramic component cabinets with foam liners.
  1. Handling Cautions
  • Do not drop or strike the component as ceramics are brittle by nature.
  • Avoid oil contamination before final assembly into fluid modules.
  1. Q: Can you meet roundness tolerances under 10 microns?
    A: Yes, precision roundness control with an accuracy of under 0.01 mm is possible on CNC centerless grinding machines.
  2. Q: Are these plunger rods compatible with PTFE piston rings?
    A: Yes, low-friction compatibility with PTFE seals is achievable due to the smooth Ra < 0.2 μm surface finish.
  3. Q: What are standard OD/Length specifications?
    A: Common specifications include outer diameters (OD) of 6mm, 8mm, and 10mm, and lengths ranging from 50mm to 120mm.
  4. Q: Is surface polishing optional?
    A: Yes, we offer both raw and polished versions depending on system requirements (e.g., seal wear sensitivity).
  5. Q: What’s the typical lead time for custom plungers?
    A: For existing specs: 5–7 business days. For new drawing: samples in 15–20 working days.
  • ⭐️⭐️⭐️⭐️⭐️
    The performance remains stable under high-temperature conditions, with no deformation or cracking issues, thanks to the ceramic robotic arm we purchased from Adcerax.
    -- Whitney Romero (Engineer)
  • ⭐️⭐️⭐️⭐️⭐️
    The wear-resistant ceramic balls have a low breakage rate, high grinding efficiency, and do not affect the whiteness of the material
    -- Ayoub (Purchasing Manager)
  • ⭐️⭐️⭐️⭐️⭐️
    The wear-resistant ceramic balls have a low breakage rate, high grinding efficiency, and do not affect the whiteness of the material
    -- Ayoub (Purchasing Manager)
customize size

What You Can Specify: Zirconia Plunger

  • Outer Diameter: Ø4mm to Ø30mm (Tolerances: ±0.01mm possible)
  • Length: 10mm to 150mm
  • Shared or Asymmetric Ends: Flat, round, bevel, closed tip
  • Surface Finish: As-sintered / Polished / Matte / Sandblasted
  • Cross-section Profile: Cylindrical by default. Special shapes on request.
  • Axial Features: Chamfers, grooves, step cuts upon drawing confirmation

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