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| Quantity: | |
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092
HaoRui
custom092
The ribbed (corrugated) profile is what makes this insulator work: every rib adds creepage distance along the surface, so the same installed length withstands higher voltage and resists surface tracking. It also sheds conductive dust instead of bridging it — the reason ribbed ceramics are standard on heating elements and high-voltage sensors.
We machine these sleeves from 95%/99% alumina tube and solid bar, so rib pitch, depth, inner bore and end faces are all specified by you rather than limited by a mould. Both deep-rib vacuum-grade parts and cost-optimised 95% versions are produced in our plant.
| Material | 95% / 99% Al2O3 alumina ceramic |
|---|---|
| Density | 3.60 – 3.85 g/cm³ |
| Max. service temperature | 1400°C (95%) – 1600°C (99%) |
| Dielectric strength | 15 – 20 kV/mm |
| Volume resistivity (20°C) | > 10^14 Ω·cm |
| Bore tolerance | ±0.01 mm (ground) |
| Rib geometry | Custom pitch / depth / profile |
Typical values for reference; custom grades and dimensions per drawing.
Heating element supports and feed-through insulation
High-voltage sensor and probe insulation
Vacuum furnace electrode insulation
Semiconductor and PV process equipment
Corundum insulator bushings for industrial controls
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.
Ribbed surfaces roughly double the effective creepage path in the same length, which raises flash-over voltage and helps the part shed conductive contamination.
Yes. We grind ribs on sintered blanks, so final dimensions are accurate and no sintering shrinkage needs to be compensated by the customer.
A 2D drawing with bore, outer diameter, length, rib pitch and depth — or a sample we can measure.
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.
