Alumina Ceramic Sealing Rings And Valve Components For High-Purity Gas Delivery And Vacuum Chamber Sealing

Alumina Ceramic Sealing Rings And Valve Components For High-Purity Gas Delivery And Vacuum Chamber Sealing

This series of alumina ceramic sealing rings and valve components are manufactured from 99.5% high-purity Al₂O₃ material, specifically designed for sealing and fluid control in extreme working conditions. Featuring nano-level surface finish (Ra≤0.05μm) and micron-level dimensional accuracy (±0.005mm), the products maintain long-term stable performance in extreme temperatures (-196℃ to 1500℃), high pressure (≤40MPa), and corrosive media environments.

Main Application Fields

• Petrochemical Industry: Reactor mechanical seals, acid/alkali valve cores

• Semiconductor: High-purity gas delivery valve seats, vacuum chamber seals

• Energy & Power: Nuclear main pump seals, gas turbine valve components

• Medical Devices: Artificial heart valves, high-purity drug control valves

• Aerospace: Rocket fuel valves, space station fluid control systems

Performance Advantage Matrix

Technical Specifications

Precision Manufacturing Process

1. Nanopowder Processing: 0.1μm high-purity powder

2. Isostatic Pressing: 300MPa high-pressure forming

3. Atmosphere Sintering: 1700℃ hydrogen environment sintering

4. Ultra-Precision Machining:

   • End-face flatness ≤0.3μm

   • Cylindricity ≤0.5μm

5. Pair Grinding: Diamond micropowder grinding fluid

6. Full Inspection Process:

   • Helium mass spectrometry leak detection

   • White light interferometer surface analysis

Usage Notes

• Ultrasonic cleaning recommended before installation (isopropanol medium preferred)

• Mating metal surface hardness should be ≥HRC45

• 50-cycle low-pressure run-in required for initial operation

• Dry running prohibited (lubrication medium must be maintained)

• Storage environment humidity ≤40%RH

After-Sales Service Guarantee

• Free sealing system simulation analysis

• 72-hour rush order service

• On-site technical support (48-hour response)

• Failure analysis reports for used components

FAQ

Q: Advantages over silicon carbide seals?
A: Better cost-performance ratio, superior insulation, more suitable for alkaline environments

Q: Maximum processable dimensions?
A: Current maximum single-piece diameter 500mm (special tooling required)

Q: Explosion-proof certification available?
A: ATEX/IECEx certification solutions provided

Q: Cryogenic temperature adaptability?
A: Stable performance at liquid nitrogen temperature (-196℃)