Welcome to the Kurt J. Lesker Company.  

Sign In | Register

Current Region: International (Change) | Contact Us |   RSS   Twitter   LinkedIn   YouTube

Close

Please select your country or region to be
directed to the appropriate Lesker site.

Flanges & Components > ConFlat (CF) Flanges & Components > ConFlat (CF) Gaskets

Annealed Copper Gaskets for CF Flanges

We manufacture a full range of OFHC Copper, annealed copper, aluminum and gold and silver plated, and elastomeric fluorocarbon gaskets for CF flanges. Metal gaskets are impermeable to gases and withstand moderately high temperatures indefinitely. 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.

CF Gasket Materials:

  • Copper -- The normal gaskets for stainless steel CF flanges are punched from 1/4 hard, high purity, oxygen-free (OFHC) copper stock. The gaskets are then chemically cleaned and processed to minimize scratches and burrs.
  • Silver & Gold plated Copper -- For systems requiring frequent high-temperature bakeouts, silver or gold plated copper gaskets are recommended.
  • Aluminum (1100-H14) -- Aluminum CF flanges must use aluminum gaskets —never copper. However, aluminum gaskets can be used on stainless steel CF flanges if baking is restricted to 200° C.
  • Fluorocarbon -- Fluorocarbon gaskets, with a flat cross-section, are convenient and reusable in non-critical, non-UHV applications, particularly in applications requiring frequent reassembly.
  • Nickel -- Nickel gaskets are typically used in applications with a corrosive environment.

NOTE:

  • Our proprietary deburring and polishing processes, designed specifically for vacuum applications, make us one of the largest copper gasket producers in the vacuum industry.
  • For detailed information about the advantages of the various materials used to make gaskets, see the Technical Information Section regarding Gaskets.

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
Per
Package
Material OD ID Thickness Weight
lbs
PartNo Price Add Item
VacuCADSM
Flange
Size
Per
Package
Material OD ID Thickness Weight
lbs
PartNo Price Add Item
VacuCADSM
6" 5 Fully Annealed Copper 4.744 4.004 0.080 0.75
VZCUA100
$32.00
(please log in)
8" 5 Fully Annealed Copper 6.736 6.004 0.080 1
VZCUA150
$50.00
(please log in)
1-1/3" 5 Fully Annealed Copper .837 .630 0.080 0.25
VZCUA19
$15.00
(please log in)
10" 5 Fully Annealed Copper 8.740 8.002 0.080 1.5
VZCUA200
$66.00
(please log in)
2-1/8" 5 Fully Annealed Copper 1.291 1.008 0.08 0.25
VZCUA25
$20.20
N/A
12" 5 Fully Annealed Copper 10.710 10.000 0.08 1.5
VZCUA250
$206.00
(please log in)
2-3/4" 5 Fully Annealed Copper 1.894 1.543 0.08 0.25
VZCUA38
$21.30
(please log in)
3-3/8" 5 Fully Annealed Copper 2.425 2.004 0.080 0.25
VZCUA54
$24.60
N/A
4-1/2" 5 Fully Annealed Copper 3.244 2.498 0.080 0.25
VZCUA64
$26.60
(please log in)
4-5/8" 5 Fully Annealed Copper 3.598 3.008 0.080 0.25
VZCUA76
$27.90
N/A

Accessories Table

Description Per Package Manual PartNo Price Add Item
VacuCADSM
Description Per Package Manual PartNo Price Add Item
VacuCADSM
Gasket Clips
10
Download PDF
VGC0275S
$61.00
N/A
Gasket Removal Tool
N/A
--
VZGRT
$38.00
N/A
4 oz. Tube Anti-Seize Thread Lube
N/A
--
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.