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Copper Gasket

Copper Gasket - Annealed

A Copper Gasket is used to mate two Conflat (CF) vacuum flanges together. The CF flange is the most widely used flange type for high vacuum and UHV applications. These flanges must be the same outer dimension. Almost all of our feedthroughs and fittings are available on this flange system.

All of our Copper Gaskets are OFHC (Oxygen-Free High Conductivity) copper alloy 101 (99.99% Pure copper). The gaskets are punched from a copper plate, chemically cleaned, and then packaged to minimize scratches and burs. These Copper Gaskets are designed to be used in the industry standard "captured copper gasket" sealing principle. See the drawing to the left to get a visual representation of how the copper gasket is used by utilizing the knife edge of the flange. This is how it creates the seal between two mating flanges. This is a standard sealing method throughout the scientific vacuum industry.

Although we do not carry Silver or Aluminum, we would be happy to source them for you. Just request them via our contact us page.

Copper Gasket Specifications:

  • Can withstand elevated temperature indefinitely
  • OFHC copper alloy 101 (99.99%) material
  • Ľ-Hard temper Rockwell 63-83 Hardness factor
  • ASTM F 68-77 ASTM B 152-79
  • Nicks or scratches shall not exceed .0005” deep, or .003” wide.
  • Burrs shall not exceed .002”

Our line of OFHC (Oxygen-Free High Conductivity) copper gaskets consists of sizes from 1.33" to 16.50" to fit any of our Conflat (CF) flanged feedthroughs, fitting, components and accessories.

Are you looking for Viton Gaskets instead? We carry those also.

 

 

Please select a copper gasket below to view detailed information about that size.


Item (click on the picture or title for detailed specifications of each item)PriceAdd to Order
Copper Gasket(s) for 1.33" CF flange Copper Gasket(s) for 1.33" CF flange
Part Number: 200730

1.33" CF Conflat® flange, OFHC copper gasket, 0.64 ID. 10 per package.
$17.00
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Copper Gasket(s) for 2.12" CF flange Copper Gasket(s) for 2.12" CF flange
Part Number: 200740

2.12" CF Conflat® flange, OFHC copper gasket, 1.00 ID.
10 per package.
$18.00
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Gasket Clip Set for CF Flanges Gasket Clip Set for CF Flanges
Part Number: 113290

Gasket Clip Set for CF Flanges / Fits all Conflat® CF Flange sizes, 2 Clips per package.
$28.00
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Copper Gasket(s) for 2.75" CF flange Copper Gasket(s) for 2.75" CF flange
Part Number: 200760

2.75" CF Conflat® flange, OFHC copper gasket, 1.45 ID.
10 per package.
$19.00
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Copper Gasket(s) 'Large-Bore' for 2.75" CF flange Copper Gasket(s) 'Large-Bore' for 2.75" CF flange
Part Number: 200761

2.75" CF Conflat® flange, OFHC copper gasket, 1.53 ID. Larger ID for use with flange that may have multiple feedthroughs. Used for extra clearance.
10 per package.
$27.00
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Copper Gasket(s) for 3.38" CF flange Copper Gasket(s) for 3.38" CF flange
Part Number: 200780

3.38" CF Conflat® flange, OFHC copper gasket, 2.01 ID.
10 per package.
$22.00
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Copper Gasket(s) for 4.50" CF flange Copper Gasket(s) for 4.50" CF flange
Part Number: 200810

4.50" CF Conflat® flange, OFHC copper gasket, 2.51 ID.
10 per package.
$34.00
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Copper Gasket(s) 'Large-Bore' for 4.50" CF flange Copper Gasket(s) 'Large-Bore' for 4.50" CF flange
Part Number: 200820

4.50" CF Conflat® flange, OFHC copper gasket, 2.80 ID.
10 per package.
$41.00
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Copper Gasket(s) for 4.62" CF flange Copper Gasket(s) for 4.62" CF flange
Part Number: 200830

4.62" CF Conflat® flange, OFHC copper gasket, 3.01 ID.
10 per package.
$37.00
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Copper Gasket(s) for 6.00" CF flange Copper Gasket(s) for 6.00" CF flange
Part Number: 200850

6.00" CF Conflat® flange, OFHC copper gasket, 4.01 ID.
10 per package.
$47.00
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Copper Gasket(s) 'Large-Bore' for 6.00" CF flange Copper Gasket(s) 'Large-Bore' for 6.00" CF flange
Part Number: 200851

6.00" CF Conflat® flange, OFHC copper gasket, 4.12 ID.
10 per package.
$65.00
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Copper Gasket(s) for 6.75" CF flange Copper Gasket(s) for 6.75" CF flange
Part Number: 200870

6.75" CF Conflat® flange, OFHC copper gasket, 5.01 ID.
10 per package.
$53.00
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Copper Gasket(s) for 8.00" CF flange Copper Gasket(s) for 8.00" CF flange
Part Number: 200880

8.00" CF Conflat® flange, OFHC copper gasket, 6.01 ID.
10 per package.
$64.00
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Copper Gasket(s) for 10.00" CF flange Copper Gasket(s) for 10.00" CF flange
Part Number: 200900

10.00" CF Conflat® flange, OFHC copper gasket, 8.00 ID.
10 per package.
$88.00
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Copper Gasket for 12.00" CF flange (single-pack) Copper Gasket for 12.00" CF flange (single-pack)
Part Number: 200921

12.00" CF Conflat® flange, OFHC copper gasket, 10.0 ID.
1 piece per package.
$46.00
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Copper Gasket(s) for 12.00" CF flange Copper Gasket(s) for 12.00" CF flange
Part Number: 200920

12.00" CF Conflat® flange, OFHC copper gasket, 10.0 ID.
10 per package.
$400.00
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Copper Gasket for 13.25" CF flange (Single-Pack) Copper Gasket for 13.25" CF flange (Single-Pack)
Part Number: 200911

13.25" CF Conflat® flange, OFHC copper gasket, 10.8" ID.
1 per package.
$49.00
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Copper Gasket(s) for 13.25" CF flange (Ten-Pack) Copper Gasket(s) for 13.25" CF flange (Ten-Pack)
Part Number: 200910

13.25" CF Conflat® flange, OFHC copper gasket, 10.8" ID.
10 per package.
$420.00
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Copper Gasket for 14.0" CF flange (Single-Pack) Copper Gasket for 14.0" CF flange (Single-Pack)
Part Number: 200931

14.0" CF Conflat® flange, OFHC copper gasket, 11.56" ID.
1 per package.
$60.00
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Copper Gasket(s) for 14.0" CF flange (Ten-Pack) Copper Gasket(s) for 14.0" CF flange (Ten-Pack)
Part Number: 200930

14.0" CF Conflat® flange, OFHC copper gasket, 11.56" ID.
10 per package.
$590.00
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Copper Gasket for 16.5" CF flange (Single-Pack) Copper Gasket for 16.5" CF flange (Single-Pack)
Part Number: 200941

16.5" CF Conflat® flange, OFHC copper gasket, 14.11" ID.
1 per package.
$64.00
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Copper Gasket(s) for 16.5" CF flange (Ten-Pack) Copper Gasket(s) for 16.5" CF flange (Ten-Pack)
Part Number: 200940

16.5" CF Conflat® flange, OFHC copper gasket, 14.11" ID.
10 per package.
$620.00
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