Weld KF (QF) HV Stainless Steel Stubs (Metric Tube)
The KF (QF) flange is used for through- or foreline vacuum plumbing and for simple HV chamber ports.
KF flanges are a sexless design—made from 304L and 316L stainless, aluminum, or brass. Stainless steel flanges work in adverse temperatures and corrosive conditions, while aluminum or brass fittings work in more general applications. The seal is a rubber/ elastomeric o-ring mounted in a centering ring, which aligns the flanges and holds the o-ring in position. Each flange has a chamfered back-surface and is mated by a circumferential clamp tightened by wing-nut, thumbscrew, bolt, or over-center lever.
KF flanges are limited (by the o-ring's properties) to applications with temperatures between ~0° C and 120–180° C, and pressure from atmosphere to ~10-8 torr or mbar.
Ordering Table
(Click column headers to sort data)
Accessories Table
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Part Number | Price | In Stock | Add Item | ||||
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| Description | For | Per Package |
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Part Number | Price | In Stock | Add Item | ||||
| Cast Clamps (SS) | KF10, KF16 Flanges | 1 |
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| Cast Clamps (SS) | KF25 Flanges | 1 |
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| Cast Clamps (SS) | KF40 Flanges | 1 |
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| Cast Clamps (SS) | KF50 Flanges | 1 |
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| Cast Clamps (Aluminum) | KF10, KF16 Flanges | 1 |
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| Cast Clamps (Aluminum) | KF25 Flanges | 1 |
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| Cast Clamps (Aluminum) | KF40 Flanges | 1 |
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| Cast Clamps (Aluminum) | KF50 Flanges | 1 |
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| Lever Clamps (Aluminum) | KF10, KF16 Flanges | 1 |
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| Lever Clamps (Aluminum) | KF25 Flanges | 1 |
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| Lever Clamps (Aluminum) | KF40 Flanges | 1 |
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| Centering Ring (SS with Fluorocarbon O-Ring) | KF10 Flanges | 1 |
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| Centering Ring (SS with Fluorocarbon O-Ring) | KF16 Flanges | 1 |
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| Centering Ring (SS with Fluorocarbon O-Ring) | KF25 Flanges | 1 |
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| Centering Ring (SS with Fluorocarbon O-Ring) | KF40 Flanges | 1 |
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| Centering Ring (SS with Fluorocarbon O-Ring) | KF50 Flanges | 1 |
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