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Flanges & Components > ConFlat (CF) Flanges & Components

Double-Faced CF Flanges

Double-faced CF flanges feature the same sized knife-edged sealing surface on both sides. The CF flange is the most widely used for high vacuum and UHV applications. Many gauges, instruments, accessories and feedthroughs are available on this flange system.

Double-Faced Flange Features:

  • Different from reducer flanges which adapt two different flange sizes
  • Through-hole bolt holes (tapped bolt hole versions available -- please contact us)
ISO Standard Our CF Flanges and Gaskets are compatible to the ISO Standard 3669-2 Specification.

Dimensional Drawings

Got VacuCADSM?
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/OD
Bore Flange
Thickness
Weight
lbs
PartNo Price Add Item
VacuCADSM
Flange
Size/OD
Bore Flange
Thickness
Weight
lbs
PartNo Price Add Item
VacuCADSM
10" Blank 0.97 20
DFF1000X000
$320.00
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10" 8.02 0.97 7.5
DFF1000X800
$320.00
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13-1/4" Blank 1.12 41
DFF1325X000
P.O.R.
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13-1/4" 10.03 1.12 18
DFF1325X1000
P.O.R.
(please log in)
1-1/3" Blank 0.28 0.5
DFF133X000
$28.90
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1-1/3" 0.63 0.28 0.5
DFF133X062
$28.90
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2-1/8" Blank 0.47 0.75
DFF212X000
$50.00
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2-1/8" 1 0.47 0.75
DFF212X100
$52.00
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2-3/4" Blank 0.5 0.75
DFF275X000
$52.00
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2-3/4" 1.51 0.5 0.75
DFF275X150
$52.00
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2-3/4" 1.51 0.75 0.75
DFF275X150S
$66.00
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2-3/4" 1.51 1 1
DFF275X150SS
$78.00
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3-3/8" Blank 0.62 1.5
DFF337X000
$75.00
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3-3/8" 2.01 0.62 1
DFF337X200
$75.00
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4-1/2" Blank 0.68 3
DFF450X000
$101.00
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4-1/2" 2.51 0.68 2.5
DFF450X250
$101.00
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4-5/8" Blank 0.75 3.5
DFF462X000
$129.00
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4-5/8" 3.01 0.75 2.5
DFF462X300
$121.00
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6" Blank 0.78 5.5
DFF600X000
$181.00
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6" 4.01 0.78 3.5
DFF600X400
$181.00
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6-3/4" Blank 0.84 8
DFF675X000
$221.00
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6-3/4" 5.01 0.84 5
DFF675X500
$356.00
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8" Blank 0.87 12
DFF800X000
$201.00
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8" 6.02 0.87 5.5
DFF800X600
$235.00
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Flange Selection Guide
With a variety of flanges to choose from, the Flange Selection Guide is designed to help you find one to meet your vacuum requirements. Shop Now!
Can't find the flange you need or want a custom configuration? Please call us at 1-412-387-9200 or email international@lesker.com with your inquiry.

Accessories Table

Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
1/4 Hard OFHC Copper Gasket
1-1/3" (DN16CF) Double-Faced CF Flanges
10
1/4 (0.11)
--
GA-0133
$20.90
(please log in)
1/4 Hard OFHC Copper Gasket
2-1/8" (DN25CF) Double-Faced CF Flanges
10
1/4 (0.11)
--
GA-0212
$23.90
(please log in)
1/4 Hard OFHC Copper Gasket
2-3/4" (DN35-DN40CF) Double-Faced CF Flanges
10
1/4 (0.11)
--
GA-0275
$27.20
(please log in)
1/4 Hard OFHC Copper Gasket
3-3/8" (DN50CF) Double-Faced CF Flanges
10
1/2 (0.22)
--
GA-0337
$30.90
(please log in)
1/4 Hard OFHC Copper Gasket
4-1/2" (DN63CF) Double-Faced CF Flanges
10
3/4 (0.34)
--
GA-0450
$37.00
(please log in)
1/4 Hard OFHC Copper Gasket
4-5/8" (DN75CF) Double-Faced CF Flanges
10
1 (0.45)
--
GA-0462
$44.00
(please log in)
1/4 Hard OFHC Copper Gasket
6" (DN100CF) Double-Faced CF Flanges
10
1-1/2 (0.68)
--
GA-0600
$55.00
(please log in)
1/4 Hard OFHC Copper Gasket
6-3/4" (DN125CF) Double-Faced CF Flanges
10
1-1/2 (0.68)
--
GA-0675
$66.00
(please log in)
1/4 Hard OFHC Copper Gasket
8" (DN160CF) Double-Faced CF Flanges
10
2 (0.91)
--
GA-0800
$78.00
(please log in)
1/4 Hard OFHC Copper Gasket
10" (DN200CF) Double-Faced CF Flanges
10
3 (1.36)
--
GA-1000
$96.00
(please log in)
1/4 Hard OFHC Copper Gasket
13-1/4" Double-Faced CF Flanges
1
1/4 (0.11)
--
GA-1325
$54.00
(please log in)
1/4—28 x 2" Bolt & Nut Set
2-1/8" (DN25CF) Double-Faced CF Flanges
25
1-1/4 (0.56)
--
HBS25028200
$26.60
(please log in)
1/4—28 x 2-1/4" Bolt & Nut Set
2-3/4" (DN35-DN40CF) Double-Faced CF Flanges
25
1-1/2 (0.68)
--
HBS25028225
$26.60
(please log in)
5/16—24 x 2-1/4" Bolt & Nut Set
3-3/8" (DN50CF) & 6-3/4" (DN125CF) Double-Faced CF Flanges
25
2 (0.91)
--
HBS31224225
$39.00
(please log in)
5/16—24 x 2-1/2" Bolt & Nut Set
4-1/2" (DN63CF) & 4-5/8" (DN75CF) Double-Faced CF Flanges
25
2 (0.91)
--
HBS31224250
$29.90
(please log in)
5/16—24 x 3" Bolt & Nut Set
6" (DN100CF) & 8" (DN160CF) Double-Faced CF Flanges
25
2 (0.91)
--
HBS31224300
$50.00
N/A
5/16—24 x 3-1/2" Bolt & Nut Set
10" (DN200CF) Double-Faced CF Flanges
25
3 (1.36)
--
HBS31224350
$47.00
N/A
3/8—24 x 4" Bolt & Nut Set
13-1/4" Double-Faced CF Flanges
30
4 (1.81)
--
HBS37524400
$88.00
N/A
#8—32 x 1-1/4" Bolt & Nut Set
1-1/3" (DN16CF) Double-Faced CF Flanges
25
1/4 (0.11)
--
SBS832125
$18.60
N/A
Gasket Clips for CF Flanges
All CF Flanges
10
1/4 (0.11)
Download PDF
VGC0275S
$61.00
N/A
Gasket Removal Tool
All CF Flanges
1
1/4 (0.11)
--
VZGRT
$38.00
N/A
4 oz. Tube Anti-Seize Thread Lube
All CF Flanges
1
1/4 (0.11)
--
VZTL-4OZ
P.O.R.
N/A

ISO:9001 The Kurt J. Lesker Company is an ISO:9001 certified company. Copyright ©1996-2017 Kurt J. Lesker Company® All rights reserved.