Connection Style Connection Style | Show |
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 | Quick Connect |
Connection Style Connection Style | Hide |
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For Tube Material For Tube Material |
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System of Measurement System of Measurement |
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Material Material |
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Connection Type Connection Type |
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 | Tube |
For Use With For Use With |
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Maximum Vacuum Maximum Vacuum |
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Maximum Temperature Maximum 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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Exterior Smoothness Exterior Smoothness |
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Sterilize With Sterilize With |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Vacuum Rating Vacuum Rating |
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High Vacuum Connection Type High Vacuum Connection Type |
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Interior Smoothness Interior Smoothness |
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O-Ring Material O-Ring Material |
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How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Quick-Connect High-Vacuum Fittings for Stainless Steel Tubing
Twist these fittings onto high-vacuum tubing to quickly make sealed, high-vacuum connections without the need for clamping, welding, or tools. To connect, insert your tubing into the fitting and twist the collar on the end of the fitting; an O-ring on the inside of the fitting compresses to form the seal. Also known as quick-disconnects, they're as easy to twist off as they are to twist on. Not for use in pressure applications.
Connectors have quick-connect fittings on both sides. Use them to connect two lengths of tubing: stainless steel to stainless steel, glass to glass, or go from one material to the other.
Adapters have a quick-connect fitting on one side and a quick-clamp fitting on the other. Use them to attach and remove components for one-off uses or to adapt your quick-clamp system to connect to glass tubing. Quick-clamp fittings are also known as KF, QF, and NW fittings; they require a clamp and ring (sold separately) to complete the connection.
Plugs fit inside the end of a quick-connect fitting to block it off when not in use.
For technical drawings and 3-D models, click on a part number.
Connectors | Replacement O-Rings | ||||||||
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| For Tube OD | Wall Thick. | Max. Vacuum | Material | O-Ring Material | Temp. Range, °F | Each | Each | ||
| 1/4" | 0.118" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Viton® Fluoroelastomer Rubber | 0° to 175° | 0000000 | 0000000 | 0000000 | 00000 |
| 1/2" | 0.078" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Viton® Fluoroelastomer Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| 3/4" | 0.212" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Viton® Fluoroelastomer Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| 1" | 0.18" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Viton® Fluoroelastomer Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/2" | 0.242" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Viton® Fluoroelastomer Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| 2" | 0.242" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Viton® Fluoroelastomer Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
Adapters | |||||||||||||
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Quick Clamp Tube Connection | Replacement O-Rings | ||||||||||||
| For Tube OD (Quick Connect) | For Tube OD | Flange OD | High-Vacuum Flange Size | High Vacuum Connection Type | Wall Thick. | Max. Vacuum | Material | O-Ring Material | Temp. Range, °F | Each | Each | ||
| 1/4" | 3/4" | 1.18" | 16 | ISO-KF | 0.118" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Buna-N Rubber | 0° to 175° | 0000000 | 0000000 | 0000000 | 00000 |
| 1/2" | 1" | 1.57" | 25 | ISO-KF | 0.118" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Buna-N Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| 3/4" | 1" | 1.57" | 25 | ISO-KF | 0.055" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Buna-N Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| 1" | 1" | 1.57" | 25 | ISO-KF | 0.055" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Buna-N Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/2" | 1 1/2" | 2.16" | 40 | ISO-KF | 0.055" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Buna-N Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| 2" | 2" | 2.95" | 50 | ISO-KF | 0.118" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | Buna-N Rubber | 0° to 175° | 0000000 | 000000 | 0000000 | 0000 |
| OD | Max. Vacuum | Material | Each | |
| 1/4" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 000000 |
| 1/2" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 00000 |
| 3/4" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 00000 |
| 1" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 00000 |
| 1 1/2" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 00000 |
| 2" | 1 × 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 00000 |
| For Tube OD | For Flange OD | Trade Number | High Vacuum Connection Type | Material | Nut Material | Max. Vacuum | Temp. Range, °F | Specifications Met | Each | |
with Wing Nut | ||||||||||
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| 1/2", 3/4" | 1.18" | 10, 16 | ISO-KF | Aluminum | Zinc Alloy | 1 × 10 -7 torr @ 72° F | 0° to 300° | ISO 2861 | 00000000 | 00000 |
| 1" | 1.57" | 25 | ISO-KF | Aluminum | Zinc Alloy | 1 × 10 -7 torr @ 72° F | 0° to 300° | ISO 2861 | 0000000 | 00000 |
| 1 1/2" | 2.16" | 40 | ISO-KF | Aluminum | Zinc Alloy | 1 × 10 -7 torr @ 72° F | 0° to 300° | ISO 2861 | 0000000 | 00000 |
| 2" | 2.95" | 50 | ISO-KF | Aluminum | Zinc Alloy | 1 × 10 -7 torr @ 72° F | 0° to 300° | ISO 2861 | 0000000 | 00000 |
Material | ||||||||||
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| For Tube OD | For Flange OD | Trade Number | High Vacuum Connection Type | O-Ring | Inner Ring | Max. Vacuum | Temp. Range, °F | Specifications Met | Each | |
| 3/4" | 1.18" | 16 | ISO-KF | Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 0° to 300° | ISO 2861 | 00000000 | 00000 |
| 1" | 1.57" | 25 | ISO-KF | Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 0° to 300° | ISO 2861 | 0000000 | 0000 |
| 1 1/2" | 2.16" | 40 | ISO-KF | Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 0° to 300° | ISO 2861 | 0000000 | 00000 |
| 2" | 2.95" | 50 | ISO-KF | Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 0° to 300° | ISO 2861 | 0000000 | 00000 |