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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 KJLC flanges & gaskets are compatible with ISO3669-2017, but more importantly are compliant to the stricter requirements of E2734/E2734M – 10.

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Ordering Table

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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 Manual
VacuCADSM
Part Number Price In Stock Add Item
Description For Per Package Manual
VacuCADSM
Part Number Price In Stock Add Item
Gasket, Copper, DN16CF (1.33" OD) Flange , 0.837" OD, 0.640" ID, (10) Per Package 1-1/3" (DN16CF) Double-Faced CF Flanges 10
(please log in)
GA-0133
$21.05 In Stock
Gasket, Copper, DN25 (2.125" OD) Flange, 1.291" OD, 1.010" ID, (10) Per Package 2-1/8" (DN25CF) Double-Faced CF Flanges 10
(please log in)
GA-0212
$24.05 In Stock
Gasket, Copper, DN35CF-DN40CF (2.75" OD) Flange, 1.895" OD, 1.451" ID, (10) Per Package 2-3/4" (DN35-DN40CF) Double-Faced CF Flanges 10
(please log in)
GA-0275
$27.35 In Stock
Gasket, Copper, DN50CF (3.375" OD) Flange, 2.425" OD, 2.010" ID, (10) Per Package 3-3/8" (DN50CF) Double-Faced CF Flanges 10
(please log in)
GA-0337
$31.10 In Stock
Gasket, Copper, DN63CF (4.50" OD) Flange, 3.243" OD, 2.506" ID, (10) Per Package 4-1/2" (DN63CF) Double-Faced CF Flanges 10
(please log in)
GA-0450
$37.20 In Stock
Gasket, Copper, DN75CF (4.625" OD) Flange, 3.598" OD x 3.010" ID, (10) Per Package 4-5/8" (DN75CF) Double-Faced CF Flanges 10
(please log in)
GA-0462
$44.25 In Stock
Gasket, Copper, DN100CF (6.00" OD) Flange, 4.743" OD,4.006" ID, (10) Per Package 6" (DN100CF) Double-Faced CF Flanges 10
(please log in)
GA-0600
$55.30 In Stock
Gasket, Copper, DN125CF (6.75" OD) Flange, 5.567" OD x 5.010" ID, (10) Per Package 6-3/4" (DN125CF) Double-Faced CF Flanges 10
(please log in)
GA-0675
$66.35 In Stock
Gasket, Copper, DN160CF (8.00" OD) Flange, 6.743" OD, 6.007" ID, (10) Per Package 8" (DN160CF) Double-Faced CF Flanges 10
(please log in)
GA-0800
$78.40 In Stock
Gasket, Copper, DN200CF (10.00" OD) Flange, 8.743" OD, 8.007" ID, (10) Per Package 10" (DN200CF) Double-Faced CF Flanges 10
(please log in)
GA-1000
$96.50 In Stock
Gasket, Copper, DN275CF (13.25" OD) Flange, 11.590" OD, 10.845" ID, (1) Per Package 13-1/4" Double-Faced CF Flanges 1
(please log in)
GA-1325
$54.30 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 1/4-28 x 2.00" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 2-1/8" (DN25CF) Double-Faced CF Flanges 25
(please log in)
HBS25028200
$26.75 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 1/4-28 x 2.25" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 2-3/4" (DN35-DN40CF) Double-Faced CF Flanges 25
(please log in)
HBS25028225
$26.75 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.25" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 3-3/8" (DN50CF) & 6-3/4" (DN125CF) Double-Faced CF Flanges 25
(please log in)
HBS31224225
$39.20 In Stock
Hex,bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.50" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 4-1/2" (DN63CF) & 4-5/8" (DN75CF) Double-Faced CF Flanges 25
(please log in)
HBS31224250
$30.05 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 3.00" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 6" (DN100CF) & 8" (DN160CF) Double-Faced CF Flanges 25
N/A
HBS31224300
$50.25 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 3.50" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 10" (DN200CF) Double-Faced CF Flanges 25
N/A
HBS31224350
$47.25 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (30) 3/8-24 x 4.00" Hex Bolts, (30) Hex Nuts, & (60) Flat Washers 13-1/4" Double-Faced CF Flanges 30
N/A
HBS37524400
$88.45 Call for Availability
Socket Head Cap Screw, Nut & Washer Set, Stainless Steel, (25) 8-32 x 1.25" Long Socket Head Cap Screws & (25) Flat Washers 1-1/3" (DN16CF) Double-Faced CF Flanges 25
N/A
SBS832125S4-25
$30.70 In Stock
Gasket Clips, For All Conflat (CF) Flange Sizes, (10) Per Package All CF Flanges 10 Download PDF
N/A
VGC0275S
P.O.R. In Stock
Gasket Removal Tool, For All Conflat (CF) Flange Sizes All CF Flanges 1
N/A
VZGRT
$38.20 In Stock
Thread Lubricant, 4 Ounce Tube All CF Flanges 1
N/A
VZTL-4OZ
P.O.R. In Stock
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Contact Us - Double-Faced CF Flanges