Sapphire or alumina windows vacuum-tight bonded into metal flanges — materials and bonding technology combined for outstanding viewport performance.

Sapphire or alumina windows vacuum-tight bonded into metal flanges — materials and bonding technology combined for outstanding viewport performance.
48H ENGINEERING REVIEW :: NDA ON REQUEST
Not sure which grade fits? Our engineers recommend material and tolerance stack based on your operating conditions — media, temperature, pressure and cycle life.
:: Used In| Forming | Dry pressing / isostatic pressing / injection molding |
|---|---|
| Machining | CNC grinding, lapping, polishing, honing |
| Tolerance | Down to ±0.005 mm on ground features |
| Surface Finish | Ra 0.02–0.05 μm lapped · Ra 0.4–0.8 μm as-fired |
| Max Size | Up to Ø600 mm / 800 mm length |
| Prototypes | From 1 pc — no MOQ for sampling |
| Lead Time | Samples 2–4 weeks · production by volume |
Formed and sintered at our Huzhou base, precision-ground in Huizhou. CMM dimensional report, material certificate and optional SEM imagery ship with your order.
Send your drawing through the RFQ form for a documented 48-hour review — or WhatsApp us photos and sketches for a same-day first answer.

High-purity alumina wafer boats for diffusion and annealing furnaces.
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Lightweight cordierite mirror blanks and structural plates for lithography and astronomical optics, where near-zero thermal expansion keeps geometry stable.
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Ceramic-tipped tweezers for electrostatic-sensitive wafer and device handling — no metal contact, no scratching, no discharge.
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Monolithic AlN and alumina substrates that move heat away from power devices without bonding layers — long-term reliability for power modules and LED.
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Translucent and opaque alumina tubes for lamp envelopes and IR heating elements, stable at high temperature with excellent electrical insulation.
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Rigid, lightweight wafer handling arms in alumina, SiC or Si3N4 — precision-ground mounting faces for fast, vibration-free transfer.
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Free DFM review :: NDA on request :: Test data with every shipment