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

KF (QF) Centering Rings with Screen

These centering rings with mesh screen are used for mating KF flanges, particularly at the inlet of a pump to filter debris, and include both the centering ring and o-ring. The KF (QF) flange is used for through- or foreline vacuum plumbing and for simple HV chamber ports.

KF Centering Rings with Screen Feature:

  • Stainless steel ring with fluorocarbon o-ring and #72 mesh screen
  • Used at mechanical pump inlet to prevent passage of loose debris through orifice

Dimensional Drawings

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Ordering Table

(Click column headers to sort data)

Flange
Size
Dim
A
Dim
B
Weight
lbs
PartNo Price Add Item
VacuCADSM
Flange
Size
Dim
A
Dim
B
Weight
lbs
PartNo Price Add Item
VacuCADSM
KF16 0.5 0.67 0.25
QF16-SRV-SM
$29.90
N/A
KF25 0.86 1.03 0.25
QF25-SRV-SM
$32.00
N/A
KF40 1.45 1.61 0.25
QF40-SRV-SM
$38.00
N/A
KF50 1.88 2.05 0.25
QF50-SRV-SM
$42.00
N/A

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