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Vacuum Flange & Fitting Machining

CF / KF / ISO flanges, blanks, viewport adaptors and feedthroughs, machined to drawing with sealing faces and bolt-hole positions under tight control.

CF flanges and electrode feedthrough assembly after welding — CF flanges and electrode feedthroughs: sealing faces, bolt patterns and feedthrough welds leak-tested as an assembly.

Section of a CF knife-edge flange sealed against an oxygen-free copper gasket — CF knife-edge flange: two knife edges compress an OFHC copper gasket for a metal seal.

Section of a KF quick-release flange with clamp — KF flange: face O-ring seal, fastened quickly with a clamp or wing nut.

ISO-K double-claw clamp versus bolted ISO-F flange — ISO-K vs ISO-F: fast assembly versus higher stiffness for fixed ports.

Scope

CF (ConFlat) Flanges

Knife-edge sealing flanges, blanks and mating parts, with knife-edge angle and flatness controlled to drawing for high-vacuum duty.

KF & ISO Flanges

KF quick-release flanges, ISO-K / ISO-F flanges and clamp rings, with O-ring groove dimensions and face parallelism controlled.

Adaptors & Spools

Viewport adaptors, electrode lead-through seats, feedthroughs, bellows end fittings and short spools, matched to the mating assembly.

Materials & Standards

Materials: 304 / 316L stainless steel and 6061 aluminium; special grades to be stated on the drawing.
Dimensions: to your drawing or the specified standard (CF / KF / ISO-K / ISO-F) — please quote the standard number with your inquiry.
Finish: as-machined, polished or passivated; sealing-face roughness to drawing.
Inspection: critical dimensions (sealing face, O-ring groove, bolt holes) measured part by part, records supplied with the goods.

Inquiry Tips

Flange parts vary widely in specification and batch size. To quote quickly, please provide: drawing or standard number, material, quantity, surface finish requirement, and whether mating parts and seals are needed. We price per piece and state the lead time; single-piece prototypes are welcome.

Small batches across many sizes: quote the whole list together and produce as one run to cut unit cost.
Ordered with chambers: flanges machined in the same batch, with holes matched, reducing on-site fitting.
Export projects: English inspection records and packing marks available on request.

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