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  • Black silicon carbide ceramic ring
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    Black silicon carbide ceramic ring

    Black silicon carbide ceramic ring is a high-performance engineered ceramic assembly made of high-purity silicon carbide by precision molding and high temperature sintering. Its quadrangular crystal structure gives the material a higher mechanical strength (>1000 MPa) and fracture toughness, with hardness exceeding Mohs 9 and abrasion resistance far exceeding that of metals and ordinary ceramics. The appearance of dark black comes from the precise control of the crystal phase structure during the sintering process, which not only enhances the density of the material, but also significantly improves its high temperature tolerance (long-term use temperature ≥800℃). This ceramic ring has low friction coefficient, chemical corrosion resistance (resistant to strong acids and alkalis) and insulation properties, and is suitable for harsh working conditions. As a representative of high-performance structural ceramics, this ceramic ring has irreplaceable value in the industrial field. Its thermal shock resistance and dimensional stability make it ideal for high-temperature seals, precision bearings, and core components of chemical pumps and valves; its bioinert properties are suitable for critical components in medical equipment. With its nearly zero thermal expansion coefficient and anti-magnetic interference characteristics, it also plays an important role in high-tech fields such as semiconductor manufacturing and aerospace. Compared with traditional metal rings, silicon carbide ceramic rings can effectively solve pain points such as wear, corrosion and high-temperature deformation, greatly extend the service life of the equipment and reduce maintenance costs. It is a key basic material to promote industrial technology upgrading.

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  • Zirconia Ceramic Ring
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    Zirconia Ceramic Ring

    Zirconia Ceramic Ring is a high-performance ceramic product known for its excellent physical and chemical properties. It has extremely high hardness and strength, with a Mohs hardness of more than 8.5, which can effectively resist wear and impact and extend its service life. In addition, the product has excellent corrosion resistance and can maintain stability in high temperature, high pressure or chemical corrosion environments, while providing a low friction coefficient, reducing energy loss and improving operating efficiency. In terms of function, Zirconia Ceramic Ring is mainly used to provide reliable sealing and support functions. For example, when used as a sealing ring in a mechanical system, it can prevent leakage and ensure system integrity; its biocompatibility properties enable it to safely contact human tissue in medical applications, avoiding allergic reactions and infection risks. Overall, the product significantly improves the performance and reliability of equipment through its durability and versatility. Zirconia Ceramic Ring is widely used in multiple industrial fields. In the medical industry, it is often used in artificial joints, dental implants or surgical instrument components because its biological inertness can reduce rejection and promote healing. In industrial manufacturing, the product is suitable for bearings, pump valve seals or precision mechanical parts, improving production efficiency and reducing maintenance costs through its wear and heat resistance. In addition, in the electronics and semiconductor fields, it is used as an insulating ring or sensor element, providing excellent electrical insulation performance and ensuring the accuracy of signal transmission. These uses fully demonstrate the versatility and adaptability of Zirconia Ceramic Ring, making it a key component in modern engineering and medical solutions.

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  • Alumina Ceramic Ring
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    Alumina Ceramic Ring

    Alumina Ceramic Ring is a high-performance ceramic component fabricated from alumina (Al₂O₃) as the primary raw material, characterized by its exceptional mechanical, thermal, and chemical properties. This product exhibits high hardness (Mohs hardness up to 9), excellent wear resistance, and superior dimensional stability, making it capable of maintaining precise geometric accuracy under long-term service conditions. Its outstanding thermal stability allows it to operate in environments up to 1600°C without deformation or degradation, while its low thermal expansion coefficient ensures minimal dimensional change across a wide temperature range. Additionally, the product demonstrates excellent electrical insulation performance, high corrosion resistance to acids, alkalis, and organic solvents, and low porosity, which collectively enable it to withstand harsh operating conditions. As a critical functional component, Alumina Ceramic Ring is widely applied in industries requiring high reliability and durability. In mechanical engineering, it serves as a sealing element in pumps, compressors, and hydraulic systems, effectively preventing fluid leakage under high pressure and high-speed rotation. In the electronics sector, it functions as an insulating substrate or support structure in high-voltage and high-frequency devices due to its superior dielectric properties. In chemical and petrochemical industries, it is utilized as a corrosion-resistant component in reactors, valves, and pipelines, ensuring long-term stability in aggressive media. Furthermore, its high-temperature resistance and wear resistance make it an ideal choice for aerospace thermal protection systems, medical device precision assemblies, and advanced manufacturing equipment, meeting the stringent demands of modern industrial applications.

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  • Alumina ceramic roller
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    Alumina ceramic roller

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  • Yttrium-stabilized zirconia ceramic positioning ring
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    Yttrium-stabilized zirconia ceramic positioning ring

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  • Alumina ceramic joints
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    Alumina ceramic joints

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  • Zirconia ceramic structural ring
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    Zirconia ceramic structural ring

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Ceramic Rings are annular, porous filter media made from high-purity clay, alumina, and other ceramic materials sintered at high temperatures. Their core features include a rich internal microporous structure, a large surface area, stable physical and chemical properties, and high mechanical strength.

This product is primarily used as a biological filter media. Its porous structure provides an ideal habitat for beneficial microorganisms such as nitrifying and nitrite-transforming bacteria to attach and reproduce, making it a key component in building efficient biological filtration systems. They are widely used in aquariums, aquaculture, and water treatment. Ceramic Rings are resistant to shattering, have a long service life, and effectively promote the biodegradation of harmful substances in water.

About Us
Zhejiang Zhufa Precision Ceramics Technology Co., Ltd.
Zhejiang Zhufa Precision Ceramics Technology Co., Ltd. is China Ceramic Ring Supplier and Ceramic Ring Factory, a manufacturing enterprise focusing on customized processing of advanced ceramic materials and precision ceramic structural parts. Its headquarters is located in Shaoxing, Zhejiang, the core area of the Yangtze River Delta in China. Since its establishment in 2022, Zhufa has always adhered to the concept of "strict selection of excellent materials, intelligent manufacturing, meticulous inspection, and sincere service", and is committed to providing stable and reliable ceramic products and personalized solutions for global industrial customers. The company has 30,000 square meters of modern plant and more than 50 core equipment, including dry pressing molding machine, isostatic pressing equipment, injection molding machine, high temperature sintering furnace, CNC engraving machine, surface grinder, centerless grinder, punch machine, honing machine, etc., with full-process production capacity from raw materials to finished products, and realizes independent control of the whole process. The company's main structural ceramic products cover a variety of materials such as zirconium oxide, aluminum oxide, silicon nitride, silicon carbide, aluminum nitride, etc. The types of parts include ceramic rods, ceramic tubes, ceramic sheets, seals and complex special-shaped parts, which are widely used in semiconductors, medical, new energy, automation equipment, laser technology, military industry and precision instruments. As a source factory integrating industry and trade, Zhufa supports customization, rapid prototyping, small batch flexible production and OEM cooperation. Since its establishment, the company has invested more than 10 million yuan in research and development, and continues to optimize material formulations and processing technology, always taking quality as the core, delivery as the guarantee, and service as the driving force to create long-term value for customers.
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News
  • In which industrial sectors are ZTA Ceramics primarily used?

    ZTA Ceramics, short for Zirconia Toughened Alumina ceramics, have gained significant attention in various industries due to their remarkable combination of hardness, toughness, and wear resistance. Unlike conventional ceramics, ZTA Ceramics offer a unique balance between strength and fracture toughness, making them hig

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  • What Level of Fracture Toughness Can ZTA Ceramics Achieve?

    ZTA Ceramics, short for zirconia-toughened alumina ceramics, have gained significant attention in high-performance engineering and industrial applications due to their remarkable combination of hardness, wear resistance, and toughness. Understanding the fracture toughness of ZTA Ceramics is crucial for industries rangi

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  • How do ZTA Ceramics perform in high-impact environments?

    ZTA Ceramics have emerged as a groundbreaking solution in industries that demand materials capable of withstanding extreme stress and impact. With the evolution of modern engineering, the need for high-performance ceramics has never been greater. Understanding how ZTA Ceramics respond under high-impact conditions is cr

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Ceramic Ring Industry knowledge

Mastering Ceramic Ring Manufacturing: Practical Insights into New Ceramic Materials and Processes


How to Select the Right New Ceramic Material for Industrial Ceramic Rings?


The functional reliability of ceramic rings starts with material selection, as different new ceramic materials are engineered to address distinct industrial challenges. Alumina ceramics, boasting Mohs hardness up to 9 and excellent acid resistance (resistant to most inorganic acids except hydrofluoric acid), are a cost-effective choice for general-purpose rings like filtration or basic structural components . Zirconia ceramics stand out for their superior toughness and thermal shock resistance, making them ideal for high-stress scenarios such as mechanical seals or precision bearing rings . For extreme environments involving high temperatures (up to 1800℃) and corrosion, silicon carbide and silicon nitride ceramics deliver unmatched performance, suitable for chemical reactor packing or high-temperature furnace components .


Source factories like Zhejiang Zhufa Precision Ceramics Technology Co., Ltd. offer tailored material solutions across zirconium oxide, aluminum oxide, silicon nitride, and silicon carbide, ensuring ceramic rings align with specific industrial requirements—whether for wear resistance, thermal management, or corrosion protection .


What Are the Critical Forming and Sintering Techniques for Ceramic Rings?


Forming and sintering directly determine the dimensional stability and mechanical strength of ceramic rings, with process selection depending on ring size and complexity. Extrusion molding is widely used for standard-sized rings (e.g., Raschig rings), where mixed ceramic powders are pressed through custom dies to achieve uniform annular shapes . For precision structural rings with complex geometries, injection molding offers better shape fidelity, though it requires precise control of slurry viscosity to avoid defects .


Sintering is the make-or-break stage: temperatures typically range from 1000℃ to 1400℃, but parameters must be calibrated to the material—for example, zirconia requires slower heating rates to prevent phase cracking . Zhejiang Zhufa Precision Ceramics Technology Co., Ltd. emphasizes process detail control, from mold design to sintering curve optimization, minimizing shrinkage-related deformations that often plague ceramic ring production .


How to Achieve Micron-Level Precision in Ceramic Ring Machining?


Ceramic rings’ inherent hardness and brittleness make precision machining a major challenge, especially for applications requiring tight tolerances (e.g., bearing rings with ≤0.001mm roundness). CNC grinding with diamond tools is the industry standard, as diamond’s extreme hardness withstands abrasion from ceramic materials . Advanced ceramic precision engraving machine further enhance accuracy with ±0.003mm tolerance control and intelligent stress compensation, which adjusts cutting parameters in real time to prevent chipping .
For post-sintering refinement, lapping and polishing techniques can achieve surface roughness as low as Ra≤0.01μm, critical for sealing or rotating rings . Zhejiang Zhufa Precision Ceramics Technology Co., Ltd. supports non-standard processing and small-batch proofing, leveraging such precision machining capabilities to meet industrial customers’ strict requirements for dimensional accuracy and surface quality .


What Quality Inspection Methods Ensure Ceramic Ring Reliability?


Comprehensive quality inspection covers both dimensional precision and material performance to avoid in-field failures. Dimensional testing uses coordinate measuring machines (CMM) with 0.7μm accuracy to verify roundness, cylindricity, and tolerance—essential for rings used in rotating equipment . Surface inspection employs profilometers to detect micro-scratches or unevenness, which can compromise sealing or fluid flow .


Performance testing is application-specific: acid resistance tests for chemical industry rings, thermal shock tests for high-temperature components, and hardness measurements (via Mohs scale or Vickers hardness testing) for wear-resistant parts . Zhejiang Zhufa Precision Ceramics Technology Co., Ltd. adheres to strict quality control from raw material incoming checks to finished product testing, ensuring each ceramic ring meets performance and reliability standards .

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