99.5% Alumina Disc Gaskets

The 99.5% alumina disc gasket is a high-performance precision structural component specifically designed for demanding industrial environments. Made from high-purity alumina (Al₂O₃), this product offers excellent electrical insulation, outstanding high-temperature resistance, and exceptional wear resistance. It maintains a stable physical structure under extreme high-temperature and high-pressure conditions, making it an ideal solution for addressing insulation and sealing challenges in high-end equipment manufacturing.

Frequently Asked Questions (FAQ)
Q1: What is the maximum operating temperature for the 99.5% alumina disc gasket?
A: Thanks to the high-purity alumina material, this disc gasket can operate at temperatures up to approximately 1750°C, easily withstanding the operating environments of most high-temperature industrial furnaces and heat treatment equipment.
Q2: Does the product support customization for non-standard dimensions? What is the machining precision?
A: We offer comprehensive customization services. Whether it’s diameter, thickness, or inner bore diameter, we can perform precision machining based on customer drawings or samples. Our dimensional tolerances can be controlled within ±0.01 mm, and both surface roughness and flatness meet extremely high precision standards.
Q3: Will this gasket corrode in strong acid or strong alkali environments?
A: 99.5% alumina possesses excellent chemical stability. With the exception of hydrofluoric acid and hot concentrated alkalis, it effectively resists corrosion from the vast majority of strong acids, strong alkalis, and molten metals, making it highly suitable for harsh operating conditions in the chemical and semiconductor industries.

Addressing User Needs and Challenges
In practical industrial applications, traditional metal or standard non-metallic gaskets often struggle to simultaneously meet the dual requirements of “high-temperature resistance” and “high insulation,” and are highly susceptible to wear from long-term friction, leading to equipment leaks. The 99.5% alumina disc gasket was specifically designed to overcome these challenges. Not only does it provide reliable electrical insulation for high-voltage electrical modules, but it also serves as a wear-resistant component in high-speed mechanical seals, significantly extending equipment maintenance intervals and ensuring the continuous and stable operation of production lines.

Core Advantages and Customization Services

1. Exceptional Physical and Electrical Properties
   High Insulation: Volume resistivity exceeds 10^14 Ω·cm, with a dielectric strength of up to 25 kV/mm, effectively blocking electrical interference.
   High Mechanical Strength: Flexural strength up to 340 MPa and compressive strength as high as 3,600 MPa, making them resistant to deformation and fracture under heavy loads.
   Extreme Hardness and Wear Resistance: Vickers hardness (HV0.5) reaches 1,900, with wear resistance far exceeding that of ordinary metals, making them the ideal material for pump mechanical seals and valve cores.
2. Ultimate Customization of Dimensions and Shapes
   We understand that assembly requirements vary greatly across different equipment, so we offer comprehensive customization services ranging from prototyping to mass production:
   Specification Range: Outer diameters from 1 mm to 300 mm, inner diameters from 0.5 mm to 300 mm, and thicknesses from 0.5 mm to 1,200 mm are all customizable.
   Precision Geometric Tolerances: Perpendicularity and concentricity are controlled within 0.01 mm; roundness, straightness, and flatness controlled within 0.005 mm.
   Surface Treatment: We support precision polishing, with surface roughness as low as Ra 0.05, meeting the requirements for mirror-finish sealing.

Typical Applications and Value
Semiconductor and Electronics Manufacturing: Used as insulating gaskets and wafer carriers in high-vacuum chambers and plasma etching equipment, addressing insulation and particle contamination challenges under high-frequency electric fields.
Chemical Processing and Fluid Control: Used as sealing gaskets in high-pressure pumps and corrosion-resistant valves, they withstand highly corrosive media and eliminate downtime caused by frequent seal replacements.
High-Temperature Heat Treatment Equipment: Serving as thermal insulation gaskets and support components in industrial furnaces, they maintain dimensional stability at temperatures above 1600°C, preventing seal failure caused by thermal expansion of materials.

If you are looking for high-performance ceramic spacers capable of withstanding extreme operating conditions, please feel free to contact us at any time. Whether you need prototype samples in special dimensions or large-scale bulk purchases, we will provide you with professional customized solutions and highly competitive quotes.

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.