Technical SPECs
The commonly used ceramic materials for ceramic washer are mainly aluminum oxide and silicon nitride.
| Property | Alumina Washers | Silicon Nitride Washers |
|---|---|---|
| Density | 3.8 g/cm³ | 3.2 g/cm³ |
| Flexural Strength | 300–400 MPa | 600–800 MPa |
| Thermal Conductivity | 24 W/m·K | 15–30 W/m·K |
| Surface Finish | Ra ≤0.1 µm | Ra ≤0.2 µm |
High-Performance Solutions for Extreme Environments
Ceramic washers are precision-engineered components made from advanced materials like alumina (Al₂O₃) and silicon nitride (Si₃N₄), designed to deliver exceptional wear resistance, thermal stability, and electrical insulation. These washers are critical in industries requiring high mechanical strength, corrosion resistance, and longevity, such as automotive, aerospace, and semiconductor manufacturing. Their lightweight design and non-magnetic properties further enhance performance in demanding applications.
Product By Features
Our ceramic washer products are customized according to customer needs and have different features. The following are some representative products.
High-temperature stability (1,200°C) and fracture toughness.
Ultra-high insulation (>10¹⁴ Ω·cm) for high-voltage systems and electronic components.
Corrosion-resistant sealing in chemical pipelines and acidic/alkaline environments.
Brazable metal coating (Cu/Ag) for vacuum feedthroughs and RF devices.
Split design for easy installation in confined spaces and maintenance-heavy equipment.
Enhanced load-bearing capacity for high-pressure sealing applications.
Distributes stress evenly in aerospace fasteners and automotive suspension systems.
Reduces friction and improves lubrication retention in rotating equipment and pumps.
Product Feature Box
Ceramic washer products have some key features, which are the important reasons why they can be used in matching application scenarios.
Alumina washers achieve Vickers hardness of 1,500–1,800 HV, reducing wear by 90% compared to metal washers.
Operate continuously at 1,600°C (Al₂O₃) or 1,200°C (Si₃N₄), ideal for high-temperature environments like aerospace engines.
Resistant to acids, alkalis, and organic solvents, ensuring durability in corrosive settings.
Volume resistivity >10¹⁴ Ω·cm, preventing short circuits in high-voltage systems.
5–10x service life in abrasive or corrosive environments.
Self-lubricating properties reduce maintenance costs.
Ceramic Washer Applications
Ceramic washers available in diameters are from 1 mm to 200 mm, with grooved or tapered designs, and has the following typical application scenarios.
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Automotive: Insulating washers for electric vehicle (EV) battery modules, reducing thermal runaway risks.
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Aerospace: High-temperature washers for jet engine components, withstanding thermal cycling.
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Semiconductor: Precision washers for wafer-handling robots, minimizing contamination.
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Energy: Corrosion-resistant washers for fuel cell stacks, enhancing operational lifespan
Ceramic washers excel in corrosive settings due to their chemical inertness. For example, alumina (Al₂O₃) resists HCl and NaOH, maintaining structural integrity where stainless steel corrodes. In chemical processing plants, ceramic washers reduce replacement frequency by 70% and eliminate contamination risks. Their non-porous surface also prevents bacterial growth, critical for pharmaceutical applications.
For high-load systems, prioritize high fracture toughness and compressive strength. Silicon nitride (Si₃N₄) offers superior mechanical strength (800 MPa) and thermal shock resistance, ideal for aerospace turbines. Alumina is better for electrical insulation and cost efficiency. Always match material properties to operational stresses—e.g., zirconia-toughened alumina (ZTA) for extreme wear.
Yes. Advanced techniques like CNC machining and hot isostatic pressing (HIP) enable intricate designs (e.g., internal cooling channels or micro-grooves) with tolerances of ±0.005 mm. For example, grooved washers in semiconductor equipment improve alignment and reduce particle generation by 40%.
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EV Manufacturing: Insulating washers for battery packs, reducing thermal runaway risks.
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Oil & Gas: Corrosion-resistant washers for drilling equipment, extending lifespan in acidic environments.
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Medical: Biocompatible zirconia washers for MRI machines, eliminating magnetic interference.
Regularly inspect for micro-cracks using ultrasonic testing. Clean with non-abrasive solvents (e.g., ethanol) to avoid surface damage. For high-vibration systems, ensure torque specifications (5–10 N·m) to prevent overloading. Recoating with wear-resistant materials like chromium oxide every 3–5 years can further enhance durability.