Alumina Ceramic Washer

Alumina ceramic gaskets are industrial ceramic components or precision ceramic parts made from high-purity alumina (Al₂O₃ ceramic) as the main raw material, through molding and high-temperature sintering. Due to their outstanding physical and chemical properties, they have become a key high-performance structural ceramic and advanced ceramic material in modern industry.

• Material: 95%, 99%, 99.5%, 99.7% high-purity alumina
• Standard thickness: 0.5mm - 10mm (Thinner or thicker options available upon request)
• Standard diameter/dimensions: Fully customisable to specifications.
• Surface finish: Can be ground or polished according to application requirements.

• Electrical insulating washer
• Heater element support spacer
• Thermal isolation washer for vacuum or furnace systems
• Spacer for semico
• nductor and electronic devices
• Wear-resistant spacer for machinery and chemical equipment
• Locating washer for optical or precision instruments

• Extremely high hardness and wear resistance: Its hardness is second only to that of diamond, and its alumina ceramic tiles can effectively resist severe particle wear, with an extremely long service life.
• Excellent high-temperature resistance: It belongs to high-temperature alumina ceramics or high-temperature resistant alumina ceramics, and can work for a long time above 1600°C, which is the basis for the application of alumina ceramic plates and alumina ceramic tubes in kilns.
• Outstanding corrosion resistance: It has excellent resistance to the vast majority of acids, alkalis and salts, and its chemical stability far exceeds that of metals. It is an ideal material for alumina ceramic sealing rings and alumina ceramic liners used in chemical pumps and valves.
• Excellent insulation and thermal conductivity: It features outstanding insulation performance of alumina. Meanwhile, alumina ceramic substrates and alumina ceramic heat sinks are crucial electronic heat dissipation and insulation components.
• High mechanical strength: It has extremely high compressive strength, but it is a brittle material. Stress concentration should be avoided in the design.
• Diverse functional forms: Not only limited to gaskets, but also can be made into alumina ceramic rods (alumina rod materials), alumina ceramic tubes (including large diameter alumina ceramic tubes), alumina ceramic rings, alumina ceramic nozzles, alumina ceramic discs, alumina ceramic bearings and other complex ceramic components.

• Utilising high-purity alumina powder, sintered to achieve dense, pore-free structures
• All products undergo 100% visual and dimensional inspection
• Test reports provided (dimensions, density, hardness, etc.)
• Professional technical team offering design and material selection advice

• We possess advancedtechnical processes and mastery of sintering, forming, grinding, CNC machining, laser drilling, lapping and polishing techniques, among others, enabling us to customise various ceramic products according to client specifications.
• Our specialist team possesses two decades of research and development expertise, specialising in the independent research,development and production of advanced ceramic materials and precision ceramics, achieving world-leading standards and benchmarks.

• Q1: Can you make customized washers or spacers?

    A1: Yes. We can produce washers with custom dimensions, hole sizes, tolerances, and surfacefinishes according to your drawings or samples

• Q2:What is your lead time for samples and mass production? 

    A2: Samples usually take 7-10 days, and mass production takes around 3-4 weeks, depending onorder quantity and part complexity.

• Q3: How do you pack the ceramic washers to avoid damage during shipping?

    A3: Each batch is packed with shockproof foam, individual separators, and reinforced cartons orwooden cases for safe international shipping.

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