Alumina Ceramic Gaskets High-Purity Material With Density Of 3.6-3.9 G/Cm Sup3 And Flexural Strength Of 300-400 MPa

Product Introduction

Alumina ceramic corrosion-resistant gaskets are industrial sealing components made from high-purity alumina (Al₂O₃) material, featuring exceptional corrosion resistance, high hardness, and excellent high-temperature performance. With purity typically reaching 95% or 99% and above, these gaskets boast high density and a compact structure, effectively resisting erosion from strong acids, alkalis, and organic solvents. They are an ideal sealing material for demanding working conditions.

Primary Applications

• Chemical Industry: Reactors, pipeline flanges, pump and valve seals

• Semiconductor Manufacturing: High-purity chemical delivery systems

• Power & Energy: Equipment handling corrosive media

• Pharmaceutical & Food Industry: Sealing in sterile corrosive environments

• Environmental Protection Equipment: Wastewater and exhaust gas treatment devices

Key Advantages

✅ Superior Corrosion Resistance: Resists all acids and alkalis except HF
✅ High-Temperature Resistance: Long-term service temperature up to 1600°C
✅ Exceptional Hardness: Mohs hardness of 9, outstanding wear resistance
✅ Excellent Insulation: Volume resistivity >10¹⁴Ω·cm
✅ Dimensional Stability: Low thermal expansion coefficient, no deformation

Specifications Table

Production Process

1. Raw Material Preparation: High-purity alumina powder formulation

2. Forming Process: Dry pressing/isostatic pressing

3. Sintering Treatment: High-temperature sintering at 1600-1800°C

4. Precision Machining: CNC grinding for dimensional accuracy

5. Quality Inspection: Dimensional tolerance/density/strength testing

6. Surface Treatment: Polishing or special coating (optional)

Usage Instructions

1. Clean sealing surfaces before installation to ensure no impurities

2. Use a torque wrench and tighten gradually in a diagonal sequence

3. Avoid localized stress concentration to prevent cracking

4. Regularly inspect sealing condition; recommended replacement cycle: 2-5 years

5. For extreme conditions, consider using with flexible graphite gaskets

After-Sales Service Commitment

• 24/7 technical support team response

• Free replacement for non-human damage

• Customized solutions available

• Regular customer follow-up services

Frequently Asked Questions (FAQ)

Q: Can it withstand hydrofluoric acid (HF) corrosion?
A: No, alumina reacts with HF. Silicon carbide material is recommended instead.

Q: What is the maximum manufacturable size?
A: Standard diameter ≤500mm; larger sizes require custom orders.

Q: How to identify genuine products?
A: Conduct density tests (≥3.6g/cm³) and XRD composition analysis.

Q: Is it electrically conductive?
A: Fully insulating, with volume resistivity >10¹⁴Ω·cm.

We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics.

Deyu Precision Ceramics Technology Co., Ltd. has many years of experience in producing special precision ceramics, and has the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. At present, the company has production and processing equipment such as dry press, isostatic press, experimental furnace, flat kiln, machining center, surface grinder, universal internal and external grinder, centerless grinder and laser cutting machine, as well as complete high-precision testing equipment such as high-precision projector, three-dimensional tester, metallographic microscope, hardness tester and densitometer.

With advanced production technology and complete production facilities, the company is one of the few domestic enterprises that can produce special precision ceramic structural parts and functional parts with machining accuracy less than 2 microns, and has strong core competitiveness in the same industry in China.

Advantages of the company: 1. National new technology enterprises; 2. The company has a municipal R&D center; 3. Cooperation with domestic key universities and research institutes; 4. Design, molding, sintering and precision processing; 5. The products cover alumina, zirconia, silicon nitride, silicon carbide and other precision ceramics; 6. Precision plus technology.

The company has always been standing in the position of customers to solve problems, focusing on the principle of quality and delivery time, adhering to the business philosophy of "integrity, innovation and reassurance", and sincerely looking forward to cooperating with you.