Custom Vacuum Flange Adapter and Non-Standard Vacuum Fitting Machined to 0.01mm Tolerance with Ra 0.2-0.4µm Seal Face Finish and NDA Protected Build-to-Print Service
Custom KF Vacuum Adapter
,Non-Standard Vacuum Thread
,OEM Stainless Vacuum Adapter
Need a vacuum adapter that is not a catalogue item? Dongguan Changxinda Precision Technology Co., Ltd. machines fully custom, non-standard vacuum fittings and adapters to your drawing or 3D model — any flange size, taper, thread or bore. Since 2008 the factory has built one-off prototypes and scheduled production batches for 200+ customers across ten industries, exporting 50–60% of its output overseas.
We are build-to-print: you define the flange, taper, thread, bore and material, we return a manufacturability review and a quote, then machine, inspect and ship. Critical features — seal face flatness, taper form and thread position — are held to ±0.01 mm and verified on a CMM, whether you order one prototype or a recurring batch.
ISO 9001:2015 • 90+ staff • Prototype to mass production • Exporting 50–60% overseas since 2008
Custom does not mean uncertain. Our workflow keeps you in control from drawing to delivery:
- Send drawings: 2D PDF, STEP, IGES or SolidWorks — or a physical sample to reverse-engineer.
- DFM review: engineering feedback on seal face, taper, thread and material before you commit.
- Quote in 24h: transparent pricing by drawing and quantity, no tooling charge.
- Program & gauges: dedicated CAM, KF gauges and thread ring gauges for your sizes.
- CNC machining: turning, threading and seal face finishing to ±0.01 mm.
- Finish & inspect: passivation or electropolishing, roughness and CMM report.
- Ship: degreased, clean-packed for vacuum use.
Non-standard is our normal work. KF, CF and ISO-K flange styles, taper-to-thread adapters, reducing adapters, custom lengths and non-standard thread pitches — all machined to print.
Confidentiality is a condition of the job, not an add-on. We sign an NDA before engineering review, limit drawing access to the assigned programming and machining team, keep your fixtures and programs dedicated to your program, and scrap surplus or reject parts on request. You keep the IP; we keep it that way.
Changxinda is a 2008-established CNC factory with 90+ staff, CNC lathes and 4-axis / 5-axis machining centers backed by a dedicated QC lab.
Custom vacuum fitting work for ten industries, all under one roof and one inspection standard:
- Consumer Electronics: phone / tablet / laptop housings, heat sinks, camera brackets, VR/AR headset structural parts, smart wearable shells
- Automation & Industrial Equipment: automation fixtures, jigs, module frames, transmission sliders, motor mounts, sensor housings, assembly line components
- Semiconductor & Vacuum Equipment: vacuum chambers, vacuum fittings, precision bases for semiconductor equipment, thermal and insulating parts, inspection tooling
- Medical Equipment: surgical instrument bases, medical testing instrument housings, endoscope accessories, medical aesthetic device structural parts (medical-grade aluminum / stainless steel)
- Automotive: new-energy motor housings, battery end plates, sensor brackets, headlamp structural parts, modified parts, hydraulic valve blocks
- Aerospace & UAV: aircraft structural parts, drone frames, landing gear accessories, aviation instrument housings (lightweight precision parts)
- Optics & Photonics: optical lens barrels, lens mounts and bases, light source heat sinks, camera module brackets, inspection optical platforms
- Communications: 5G heat dissipation cavities, filter parts, signal adapter structural parts, communication equipment housings
- Robotics: robotic arm joint parts, robot bases, reducer housings, AGV structural parts
- Instruments & Meters: testing equipment housings, precision gauge bases, flow meter parts, laboratory equipment accessories
- 100% custom vacuum flange adapters and fittings
- ±0.01 mm on seal face, taper and thread position
- Seal faces finished to Ra 0.2–0.4 µm
- NDA and IP protection before engineering review
- KF / CF / ISO-K styles, reducing adapters, custom lengths
- Materials: 304, 316L stainless steel, aluminum, brass
- Passivation or electropolishing for low outgassing
- Dedicated gauges, programs and fixtures per customer part
- No tooling charge, MOQ from 1 piece
- Stable scheduled batches for repeat orders
| Product Type | Custom vacuum flange adapter (OEM / ODM) |
|---|---|
| Machining | CNC turning, build to drawing |
| Tolerance | ±0.01 mm on critical features |
| Material Options | 304 / 316L stainless steel, aluminum, brass |
| Flange Styles | KF, CF, ISO-K, reducing and custom adapters |
| Seal Face Finish | Ra 0.2 – 0.4 µm |
| Confidentiality | NDA / IP protection available |
| Inspection | CMM + roughness report |
| MOQ | 1 piece |
Yes — that is our core work. Send a 2D drawing, STEP/IGES/SolidWorks model or a physical sample and we machine the custom flange, taper, thread and bore to print.
Yes, routinely. Drawings are limited to the assigned programming and machining team, fixtures and programs stay dedicated to your part, and surplus or reject parts are scrapped on request.
One piece. There is no tooling or setup charge, so single prototypes are practical and mass production runs on the same inspection standard.
Capacity is planned per program. Prototypes ship in 3–7 days, small batches in 7–14 days and production volumes in 14–30 days, with supply ability up to 10,000 pieces per month.
Yes — send a sample and we measure the flange, taper, thread and seal face, then quote a drop-in equivalent with a CMM and roughness report.
Yes. We machine CF and KF styles, finish seal faces to Ra 0.2–0.4 µm, and can passivate or electropolish to reduce outgassing. Helium leak testing is available on request.
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