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Connection Style Connection Style | Show |
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| Claw Clamp |
Connection Style Connection Style | Hide |
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| Threaded |
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| Push to Connect |
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| Quick Disconnect |
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| Barbed |
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| Flared |
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| Cam-and-Groove |
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| Socket Connect |
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| Quick Turn |
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| Yor-Lok |
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| Compression |
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| Butt Weld |
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| Clamp On |
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| Quick Clamp |
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| Flanged |
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| Gasket |
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| Quick Connect |
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| Claw |
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| Slip On |
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| Claw Clamp |
Type Type |
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 | Cap |
System of Measurement System of Measurement |
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Material Material |
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Shape Shape |
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 | Cap/Plug |
For Tube Material For Tube Material |
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High Vacuum Connection Type High Vacuum Connection Type |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Length Length |
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Maximum Temperature Maximum Temperature |
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Minimum Temperature Minimum Temperature |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Sterilize With Sterilize With |
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Vacuum Rating Vacuum Rating |
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Connection Type Connection Type |
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 | Tube |
Maximum Pressure Maximum Pressure |
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Maximum Vacuum Maximum Vacuum |
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Claw-Clamp High-Vacuum Fittings for Stainless Steel Tubing
An alternative to bolt-together fittings, these handle larger tube OD sizes and have higher vacuum ratings than quick-clamp fittings. Also known as ISO-K high-vacuum fittings, the clamps have claws that grab hold of fittings with flanged ends. To complete a connection, use a ring and four clamps (sold separately). Not for use in pressure applications.
Double-claw clamps attach to the grooves on the fittings.
Single-claw clamps have a clamp on one end and an exposed bolt on the other. Thread the bolt-end directly into the body of pumps, valves, or other high-vacuum components.
For technical drawings and 3-D models, click on a part number.
Caps
Cap
| For Tube OD | Flange OD | High-Vacuum Flange Size | High Vacuum Connection Type | No. of Claw Clamps Required | Material | Max. Vacuum | Each | |
| 2 1/2" | 3.74" | 63 | ISO-K | 4 | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 0000000 | 000000 |
| 3" | 4.33" | 80 | ISO-K | 4 | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 0000000 | 00000 |
| 4" | 5.12" | 100 | ISO-K | 4 | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 0000000 | 00000 |
| 6" | 7.09" | 160 | ISO-K | 4 | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 0000000 | 000000 |
Rings
Ring
Material | |||||||||
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| For Tube OD | For Flange OD | For High-Vacuum Flange Size | High Vacuum Connection Type | O-Ring | Inner Ring | Max. Vacuum | Max. Temp., °F | Each | |
| 2 1/2" | 3.74" | 63 | ISO-K | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 400° | 0000000 | 000000 |
| 3" | 4.33" | 80 | ISO-K | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 400° | 000000 | 00000 |
| 4" | 5.12" | 100 | ISO-K | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 400° | 0000000 | 00000 |
| 6" | 7.09" | 160 | ISO-K | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 400° | 0000000 | 00000 |
Clamps
Double-Claw Clamp
Single-Claw Clamp
| For Tube OD | For Flange OD | For High-Vacuum Flange Size | High Vacuum Connection Type | Material | Bolt Material | Max. Vacuum | Each | |
Double Claw | ||||||||
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| 2 1/2", 3", 4" | 3.74", 4.33", 5.12" | 63, 80, 100 | ISO-K | Aluminum | 18-8 Stainless Steel | 1 × 10 -9 torr @ 72° F | 0000000 | 00000 |
| 6" | 7.09" | 160 | ISO-K | Aluminum | 18-8 Stainless Steel | 1 × 10 -9 torr @ 72° F | 0000000 | 0000 |
Single Claw | ||||||||
| 2 1/2", 3", 4" | 3.74", 4.33", 5.12" | 63, 80, 100 | ISO-K | Aluminum | 18-8 Stainless Steel | 1 × 10 -9 torr @ 72° F | 0000000 | 0000 |
| 6" | 7.09" | 160 | ISO-K | Aluminum | 18-8 Stainless Steel | 1 × 10 -9 torr @ 72° F | 0000000 | 0000 |