Custom-machined electrical, RF, vacuum, and thermal ceramic bushings, flanged washers, standoffs, and heater bobbins built to your engineering drawing.
Equipment builders in PVD/CVD semiconductor tools, electron-beam welders, analytical mass spectrometers, and industrial induction heaters rely on custom ceramic insulators where polymers melt, outgas, or arc. By combining CNC green-body machining before sintering with post-fire diamond grinding, complex flanged bushings, stepped collars, threaded standoffs, and slotted heater cores can be produced in small prototype lots without expensive dry-press steel tooling.
Materials include 95%–99.8% alumina, yttria-stabilized zirconia, steatite, and thermal-shock-tolerant cordierite/mullite.
| Property / Metric | Nominal Reference Value (Grade Dependent) |
|---|---|
| Dielectric Breakdown | 14–22 kV/mm (material & thickness dependent) |
| Dimensional Tolerances | ±0.01 to ±0.05 mm on diamond-ground features |
| Vacuum Compatibility | Zero outgassing down to 10⁻¹⁰ Torr (dense 99.5%+ Al2O3) |
| Continuous Temp Range | 1,200 °C (Steatite) to 1,750 °C (99.8% Al2O3) |
| Batch Sizes | 1–10 pc CNC prototypes through 10,000+ pc production |
Reference values reflect typical sintered, fused, or wrought grades. Exact batch test figures are confirmed on your written quotation and accompanying lot Certificate of Analysis.
Share part dimensions or drawing number/revision, preferred ceramic grade, critical tolerances, breakdown voltage or operating temperature, vacuum cleanliness requirements, and prototype vs. annual quantity.
Include target quantity, destination country/postal code for express air freight calculation, and any special cleanroom bagging or certification requests.
Prepare Ceramic Insulators RFQ ↗Complementary furnaceware, substrates, PVD consumables, and refractory hardware frequently ordered together.
TB-AL2O3-PLThin tape-cast electronic substrates (96% / 99.6%) and thick precision-ground alumina setter and wear plates with optional laser cutting or CNC machining.
TB-HBN-MCHot-pressed hexagonal boron nitride (h-BN) crucibles, rods, plates, and precision CNC components combining extreme thermal shock resistance, molten-metal non-wetting, and electrical insulation.
TB-MGC-STKZero-porosity fluorphlogopite mica glass-ceramic rods, plates, and finished CNC parts that machine with standard metalworking tools with zero post-firing shrinkage.
TB-ZRO2-CRTransformation-toughened 3Y-TZP structural zirconia parts and ultra-refractory YSZ/Mg-PSZ crucibles, setter plates, and tubes rated up to 2,100 °C.
Submit your purity grade, geometry, quantity, and documentation requirements. Every order includes the producing mill's batch Certificate of Analysis (COA) and pre-shipment dimensional verification.