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| Quantity: | |
|---|---|
103
HaoRui
custom103
This flanged ceramic sleeve caps the electrode where it enters the hot zone. The flange with bolt holes fixes the sleeve to the housing, the deep cup shields the electrode from radiation and splash, and the alumina wall keeps the live electrode insulated from the grounded housing — one part replacing a metal heat shield plus a separate insulator.
Flange diameter, bolt circle, cup depth and wall thickness are all machined to drawing from 99% alumina, so it fits existing electrode ports without modifying the housing.
| Material | 99% Al2O3 alumina ceramic |
|---|---|
| Density | 3.80 – 3.85 g/cm³ |
| Max. service temperature | 1600°C |
| Dielectric strength | 15 – 20 kV/mm |
| Flange bolt circle | Custom per drawing |
| Wall thickness | 3 – 15 mm typical |
| Flatness of flange face | ≤0.02 mm |
Typical values for reference; custom grades and dimensions per drawing.
Furnace and vacuum furnace electrode ports
Plasma and arc equipment electrode shielding
Electric heating assemblies
Semiconductor and crystal growth equipment
Any live electrode passing through a grounded hot wall
Haorui Industrial has machined non-standard advanced ceramics since 2006 (ISO 9001). Send us a 2D drawing (PDF/DWG) or a sample: we quote with tolerance and material recommendation, produce 1–10 piece prototypes in 7–15 days, and keep the process data for repeat batches. Materials available: 95% / 99% / 99.5% Al2O3, ZrO2, Si3N4, SiC, AlN, macor.
For vacuum-tight service we recommend a compatible seal on the ground flange face; the alumina face itself is lapped flat to ≤0.02 mm to seal reliably.
Yes — the part is ground from sintered alumina, so depth is not limited by a pressing mould.
Design clearance for electrode travel; we can supply test pieces so you can validate the fit before batch production.
Quality you can verify: Haorui Industrial operates an ISO 9001:2015 certified quality management system (scope: precision mechanical ceramics parts), and our alumina and zirconia ceramics are RoHS 2.0 compliant — tested per IEC 62321 by an accredited third-party laboratory. We exhibit every year at CIOE (China International Optoelectronic Exposition) and semiconductor industry expositions in Shenzhen — visit our booth to see the parts in person.
