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Flanges & Components > KF (QF) Flanges & Components > KF (QF) O-Rings & Centering Rings

Replacement O-Rings (Fluorocarbon)

These replacement elastomeric o-rings are used (in conjunction with a centering ring -- not included) for sealing KF flanges. The KF (QF) flange is used for through- or foreline vacuum plumbing and for simple HV chamber ports.

O-Rings Feature:

  • O-Rings available in fluorocarbon, Buna-N (nitrile rubber), and silicone materials
  • The more popular o-ring sizes for vacuum use are listed below; contact us for other sizes or for application questions

Dimensional Drawings

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VacuCAD is a free library containing thousands of 2D CAD drawings (in DXF format) and 3D Models (in STP format) for many of our standard vacuum components and chambers. Please Log in

Ordering Table

(Click column headers to sort data)

Flange
Size
Material O-Ring ID O-Ring
Cross Section
PartNo Price Add Item
VacuCADSM
Flange
Size
Material O-Ring ID O-Ring
Cross Section
PartNo Price Add Item
VacuCADSM
KF10 Fluorocarbon 0.6 0.21
O-V312
$5.10
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KF16 Fluorocarbon 0.72 0.21
O-V314
$5.90
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KF25 Fluorocarbon 1.1 0.21
O-V320
$7.70
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KF40 Fluorocarbon 1.6 0.21
O-V326
$8.50
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KF50 Fluorocarbon 2.1 0.21
O-V330
$11.30
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