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

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.