High thickness alumina ceramic sealing ring

High thickness alumina ceramic sealing ring is an advanced ceramic sealing component made from high-purity alumina (Al ₂ O ∝) through isostatic pressing, high-temperature sintering, and precision machining processes.
Core features:
High hardness and wear resistance: The Mohs hardness reaches level 9, and the wear resistance is 5-10 times that of traditional metal materials, significantly extending the sealing life.
High temperature resistance and corrosion resistance: It can work stably in a wide temperature range of -196 ℃ to 1600 ℃, and is resistant to strong acids, strong alkalis, and organic solvents.
Low friction coefficient: The surface smoothness can reach Ra0.1 μ m or less, reducing sealing surface wear and energy consumption.
High thickness design: Supports a thickness range of 5-50mm, suitable for high pressure and strong impact conditions, avoiding deformation and cracking problems of traditional thin rings.
Excellent insulation performance: volume resistivity>10 ¹⁴Ω· cm, suitable for electrochemical corrosion environments.
Example of Technical Parameters:
Aluminum oxide content: ≥ 95% (customizable with high purity of 99% and 99.7%)
Density: ≥ 3.85g/cm ³
Bending strength: ≥ 350MPa
Thermal expansion coefficient: 7.2 × 10 ⁻⁶/℃ (25-1000 ℃)

Application field
High thickness alumina ceramic sealing rings have become an ideal solution for sealing problems in multiple industries due to their extreme environmental adaptability

1. Petrochemical and natural gas extraction
   Problem: High pressure wellhead equipment and valve sealing surfaces are prone to corrosion by hydrofluoric acid, hydrogen sulfide, etc., and traditional metal rings have a short lifespan.
   Solution: Improve the corrosion resistance of ceramic rings by more than three times the operating cycle of equipment, reducing downtime maintenance costs.
2. New energy and semiconductor manufacturing
   Problem: Lithium battery slurry grinding and photovoltaic silicon wafer cutting equipment require high cleanliness sealing, and metal rings are prone to contaminating products.
   Solution: Ceramic rings have no metal ion precipitation and meet Class 100 cleanroom standards.
3. Aerospace and deep-sea equipment
   Problem: Rocket engine fuel pumps and deep-sea probe hydraulic systems need to withstand extreme pressure and temperature differences.
   Solution: The high thickness design can withstand pressures of over 200MPa and adapt to instantaneous temperature changes from -50 ℃ to 800 ℃.
4. Power and Metallurgical Industry
   Problem: The sealing surface of high-temperature furnaces and vacuum coating equipment is prone to oxidation, leading to a decrease in vacuum degree.
   Solution: The ceramic ring maintains airtightness at 1200 ℃, with a vacuum leakage rate of less than 1 × 10 ⁻¹¹ Pa · m ³/s.

Customized service
We provide customized support for the entire process from material selection to finished product delivery, meeting the needs of special working conditions:

1. Material customization
   Purity adjustment: Depending on the type of corrosive medium, options for 95%, 99%, and 99.7% alumina content are provided.
   Composite materials: Adding reinforcing phases such as ZrO ₂ and SiC to enhance impact resistance (such as ZTA ceramic composite rings).
2. Customization of size and structure
   Thickness range: 5-50mm, supporting stepped and irregular section designs.
   Sealing surface treatment: Provide surface treatment processes such as mirror polishing (Ra ≤ 0.05 μ m) and laser micro texturing to optimize lubrication performance.
   Dynamic sealing adaptation: Design V-shaped, U-shaped, or labyrinth sealing grooves according to the requirements of rotation/reciprocating motion.
3. Performance Enhancement Options
   High temperature strengthening: By using nano doping technology, the operating temperature is increased to 1800 ℃.
   Conductive ceramics: Adding TiC conductive phase to meet the requirements of electrical discharge machining (EDM).
   Self lubricating coating: Spray MoS ₂ or DLC coating to reduce the friction coefficient to below 0.02.

High thickness alumina ceramic sealing rings are an ideal choice for modern industry to meet demanding sealing challenges. It fundamentally enhances the operational reliability and economy of the equipment with its sturdy, durable, and stable characteristics. If you are looking for the ultimate sealing solution that can cope with high temperature, high pressure, strong wear and corrosion, our products and services will be your trusted partner.

Brudeze Ceramics supplies and sells a wide range of high-quality quartz glass, including alumina ceramics, zirconia ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, boron carbide ceramics, bioceramics, machinable ceramics, etc. We can meet the customization requirements of various ceramic products.