Centering rings are used to seal the connection between two ISO-KF vacuum flange faces when used with a ISO-KF flange clamp.
| Compare | Model | Drawings, CAD & Specs | Availability | Price | |||
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100312500 Centering Ring Seal Assembly, ISO-KF, NW10, Buna-N O-ring, Aluminum |
In Stock
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$5.45 |
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100312501 Centering Ring Seal Assembly, ISO-KF, NW16, Buna-N O-ring, Aluminum |
In Stock
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$4.98 |
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100312503 Centering Ring Seal Assembly, ISO-KF, NW25, Buna-N O-ring, Aluminum |
In Stock
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$5.95 |
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100312505 Centering Ring Seal Assembly, ISO-KF, NW40, Buna-N O-ring, Aluminum |
In Stock
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$7.76 |
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100312506 Centering Ring Seal Assembly, ISO-KF, NW50, Buna-N O-ring, Aluminum |
In Stock
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$11.16 |
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100312600 Centering Ring Seal Assembly, ISO-KF, NW10, Viton O-ring, Aluminum |
In Stock
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$7.52 |
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100312601 Centering Ring Seal Assembly, ISO-KF, NW16, Viton O-ring, Aluminum |
In Stock
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$7.89 |
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100312603 Centering Ring Seal Assembly, ISO-KF, NW25, Viton O-ring, Aluminum |
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$8.97 |
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100312605 Centering Ring Seal Assembly, ISO-KF, NW40, Viton O-ring, Aluminum |
In Stock
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$11.88 |
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100312606 Centering Ring Seal Assembly, ISO-KF, NW50, Viton O-ring, Aluminum |
In Stock
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$15.41 |
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100312700 Centering Ring Seal Assembly, ISO-KF, NW10, Viton O-ring, 304 S.S. |
In Stock
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$8.49 |
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100312701 Centering Ring Seal Assembly, ISO-KF, NW16, Viton O-ring, 304 S.S. |
In Stock
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$8.73 |
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100312703 Centering Ring Seal Assembly, ISO-KF, NW25, Viton O-ring, 304 S.S. |
In Stock
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$9.83 |
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100312705 Centering Ring Seal Assembly, ISO-KF, NW40, Viton O-ring, 304 S.S. |
In Stock
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$14.80 |
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100312706 Centering Ring Seal Assembly, ISO-KF, NW50, Viton O-ring, 304 S.S. |
In Stock
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$19.29 |
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100312801 Centering Ring Assembly, NW16 ISO-KF, Buna-N O-ring, Stainless Steel |
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$8 |
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100312803 Centering Ring Assembly, NW25 ISO-KF, Buna-N O-ring, Stainless Steel |
In Stock
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$9.59 |
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100312805 Centering Ring Assembly, NW40 ISO-KF, Buna-N O-ring, Stainless Steel |
In Stock
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$15.77 |
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100312806 Centering Ring Assembly, NW50 ISO-KF, Buna-N O-ring, Stainless Steel |
In Stock
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$18.56 |
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100317301 Centering Ring Seal Assembly, ISO-KF, NW16, Silicon O-ring, 304 S.S. |
In Stock
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$26.99 |
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100317303 Centering Ring Seal Assembly, ISO-KF, NW25, Silicon O-ring, 304 S.S. |
In Stock
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$22.16 |
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100317305 Centering Ring Seal Assembly, ISO-KF, NW40, Silicon O-ring, 304 S.S. |
In Stock
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$16.01 |
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100317306 Centering Ring Seal Assembly, ISO-KF, NW50, Silicon O-ring, 304 S.S. |
In Stock
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$34.73 |
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| Buna-N | Viton® | Silicone | |
|---|---|---|---|
| Compound | N674-70 | V747-75 | S604-70 |
| Color | Black | Black | Rust |
| Bakeout | 80°C | 150°C | 185°C |
| Benefits | Seals easier, lower cost | Chemical resistance, lasts longer | High temperature |
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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