ISO-KF vacuum flange clamps provide the sealing force to fully compress the O-ring for a vacuum seal, and mechanical force to hold the two flange faces together. We offer toggle, wing nut, and bulkhead style clamps for various ISO-KF flange sizes.
| Compare | Model | Drawings, CAD & Specs | Availability | Price | |||
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100312901 Wing Nut Flange Clamp, NW16 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$8.37 |
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100312903 Wing Nut Flange Clamp, NW25 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$11.16 |
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100312905 Wing Nut Flange Clamp, NW40 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$12.50 |
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100312906 Wing Nut Flange Clamp, NW50 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$21.10 |
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100318801 Toggle Flange Clamp, NW16 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$20.62 |
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100318801-L Toggle Flange Clamp, Lanyard, NW16 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$21.47 |
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100318803 Toggle Flange Clamp, NW25 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$21.71 |
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100318803-L Toggle Flange Clamp, Lanyard, NW25 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$24.50 |
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100318805 Toggle Flange Clamp, NW40 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$23.28 |
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100318805-L Toggle Flange Clamp, Lanyard, NW40 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$26.20 |
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100318806 Toggle Flange Clamp, NW50 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$31.08 |
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100318806-L Toggle Flange Clamp, Lanyard, NW50 Size ISO-KF Vacuum Flange, Aluminum |
In Stock
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$30.03 |
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100318901 Bulkhead Flange Clamp, NW16 Size ISO-KF Flange, 6 Bolts, Aluminum |
In Stock
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$24.87 |
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100318903 Bulkhead Flange Clamp, NW25 Size ISO-KF Flange, 6 Bolts, Aluminum |
In Stock
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$28.75 |
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100318905 Bulkhead Flange Clamp, NW40 Size ISO-KF Flange, 6 Bolts, Aluminum |
In Stock
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$35.81 |
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100318906 Bulkhead Flange Clamp, NW50 Size ISO-KF Flange, 8 Bolts, Aluminum |
In Stock
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$41.58 |
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The International Standards Organization has defined the interface dimensions of ISO-KF vacuum flanges allowing the interchanging of components that conform to the ISO-KF standard. The ISO-KF flange system provides is a modular building block method for creating a vacuum systems. Since component dimensions are standardized, elbows, tees, crosses or valves for a given flange size can be interchanged. The flanges are sexless and the seal is symmetrical allowing components to be rotated. By using ISO-KF standard components, vacuum system assembly is quick and cost effective.
ISO-KF vacuum flange components are joined by inserting a centering ring seal between the two flange faces, then securing the assembly with a flange encompassing clamp. There are a variety of flange clamp choices available. The wing-nut flange clamp is hand tightened until metal contact is felt. The toggle flange clamp is convenient and easy to use and provides enough sealing force to fully compress the O-Ring, so that the flanges and the centering ring are metal to metal. The self-adjusting clamp locks in a positive method making it ideal when clamp must be removed frequently, like leak testing or gauge calibration. Bulkhead flange clamps attach an ISO-KF flange directly to a chamber or base plate. The two-part, bolted clamp fits over the flange with a centering ring assembly used between the flange and the opening.
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