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High-Polish Metal Quick-Clamp Sanitary Tube Fittings

- Temperature Range: See Gaskets
The smooth finish inside these fittings makes it easy to remove product residue. Also known as aseptic and tri-clamp fittings, they connect with a gasket, a clamp, and another quick-clamp fitting for a fast and easy way to access your line. The pressure rating of the fitting will vary depending on the clamp you choose, and the temperature rating will vary based on the gasket material you choose.
Inch fittings connect to another same-size fitting and squeeze the gasket in between for a tight seal.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
3-A certified fittings comply with sanitary standards.
Note: To complete a connection, you’ll need two quick-clamp fittings, a clamp, and a gasket (all sold separately).
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Beverage, Dairy, Food, Water
- Tubing:
Inch Fittings: Use with welded 304/304L or 316/316L stainless steel that meets ASTM A269 or ASTM 270
Metric Fittings: Use with welded 304/304L or 316/316L stainless steel - Specifications Met: See table
Fittings with butt-weld end are also known as ferrules; they weld to tubing for a permanent, flush connection.
For Tube OD | |||||||
---|---|---|---|---|---|---|---|
Quick Clamp | Butt Weld | Flange OD | Lg. | Wall Thick. | Specifications Met | Each | |
Inch | |||||||
6" | 6" | 6.57" | 1 1/2" | 0.109" | 3-A Certified 63-04 | 00000000 | 000000 |
For Tube OD | ||||||||
---|---|---|---|---|---|---|---|---|
Quick Clamp | Butt Weld | Flange OD | Lg. | Wall Thick. | Specifications Met | Certification | Each | |
Inch | ||||||||
1/2" | 1/2" | 0.984" | 1 1/2" | 0.083" | __ | __ | 000000000 | 000000 |
3/4" | 3/4" | 0.984" | 1 1/2" | 0.083" | __ | __ | 000000000 | 00000 |
6" | 6" | 6.57" | 1 1/2" | 0.109" | 3-A Certified 63-04 | Material Certificate with Traceable Lot Number and Test Report | 000000000 | 000000 |
8" | 8" | 8.57" | 1 1/2" | 0.109" | 3-A Certified 63-04 | Material Certificate with Traceable Lot Number and Test Report | 000000000 | 000000 |
10" | 10" | 10.57" | 1 1/2" | 0.134" | 3-A Certified 63-04 | Material Certificate with Traceable Lot Number and Test Report | 000000000 | 000000 |

- For Use With: Air, Beverage, Dairy, Food, Water, except fittings with a 0.13" wall thickness cannot be used with dairy
- Tubing: Use with welded 304/304L or 316/316L stainless steel that meets ASTM A269 or ASTM 270
- Specifications Met: See table
Fittings with butt-weld end are also known as ferrules; they weld to tubing for a permanent, flush connection. Tank butt-weld fittings have an extra-thick wall for welding.

- For Use With: Air, Water
- Tubing: Use with welded 304/304L or 316/316L stainless steel that meets ASTM A269 or ASTM 270
Expand-to-connect fittings are also known as nonrecess or roll-on ferrules. To connect, insert metal tubing into the fitting and use an expansion tool (sold separately) to press the tubing into the fitting wall.

For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
1/4", 3/8", 1/2", 5/8", 3/4" | 0.984" | 1,200 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |
2" | 2.516" | 450 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
4" | 4.682" | 200 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
6" | 6.57" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
8" | 8.57" | 100 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
10" | 10.57" | 40 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |

For Tube OD | For Flange OD | Bolt Material | Max. Pressure | For Tube Specifications Met | Each | |
1/2", 3/4" | 0.984" | 304 Stainless Steel | 1,500 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |
2" | 2.516" | 304 Stainless Steel | 1,000 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
4" | 4.682" | 304 Stainless Steel | 1,000 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
6" | 6.57" | 304 Stainless Steel | 300 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
8" | 8 3/4" | 304 Stainless Steel | 100 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |

For Tube OD | For Flange OD | Bolt Material | Max. Pressure | Specifications Met | Each | |
2" | 2.516" | 316 Stainless Steel | 1,300 psi @ 72° F | ASME BPVC.VIII | 0000000 | 0000000 |
4" | 4.682" | 316 Stainless Steel | 820 psi @ 72° F | ASME BPVC.VIII | 0000000 | 000000 |
6" | 6.57" | 316 Stainless Steel | 210 psi @ 72° F | ASME BPVC.VIII | 0000000 | 000000 |
8" | 8.57" | 316 Stainless Steel | 140 psi @ 72° F | ASME BPVC.VIII | 0000000 | 000000 |
10" | 10.57" | 316 Stainless Steel | 100 psi @ 72° F | ASME BPVC.VIII | 0000000 | 000000 |

For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
1/2", 3/4" | 0.984" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |
2" | 2.516" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
4" | 4.682" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
6" | 6.57" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |
8" | 8.57" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |

Buna-N gaskets are oil resistant. EPDM gaskets resist water and steam and work well in humid environments. Silicone gaskets withstand high temperatures. Fluoroelastomer gaskets stand up to fuel, oil, and acid condensates. PTFE gaskets withstand harsh chemicals, with the exception of molten alkali metal and elemental fluorine.
For Tube OD | ID | OD | Thick. | Temp. Range, °F | Color | Specifications Met | Each | |
Buna-N Rubber | ||||||||
---|---|---|---|---|---|---|---|---|
1/2" | 0.380" | 0.860" | 0.178" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
3/4" | 0.620" | 0.860" | 0.178" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
4" | 3.870" | 4.680" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
6" | 5.820" | 6.510" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
8" | 7.780" | 8.670" | 0.205" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
10" | 9.770" | 10.660" | 0.205" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
EPDM Rubber | ||||||||
1/2" | 0.380" | 0.860" | 0.178" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
3/4" | 0.620" | 0.860" | 0.178" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
4" | 3.870" | 4.680" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
6" | 5.820" | 6.670" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
8" | 7.780" | 8.670" | 0.205" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
10" | 9.770" | 10.660" | 0.205" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
Silicone Rubber | ||||||||
1/2" | 0.380" | 0.860" | 0.178" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
3/4" | 0.620" | 0.860" | 0.178" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
4" | 3.870" | 4.680" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
6" | 5.820" | 6.510" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
8" | 7.780" | 8.670" | 0.205" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
10" | 9.770" | 10.660" | 0.205" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
Fluoroelastomer Rubber | ||||||||
1/2" | 0.380" | 0.860" | 0.178" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
3/4" | 0.620" | 0.860" | 0.178" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
4" | 3.870" | 4.680" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
6" | 5.820" | 6.510" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
8" | 7.780" | 8.670" | 0.205" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
10" | 9.770" | 10.660" | 0.205" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
PTFE Plastic | ||||||||
1/2" | 0.380" | 0.860" | 0.178" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
3/4" | 0.620" | 0.860" | 0.178" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
4" | 3.870" | 4.680" | 0.203" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
6" | 5.820" | 6.510" | 0.203" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 00000 |
8" | 7.780" | 8.670" | 0.205" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 00000 |
10" | 9.770" | 10.660" | 0.205" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 000000 |

For Tube OD | |||||||
---|---|---|---|---|---|---|---|
Gasket Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Includes | Each | |
2" | 2" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 304 Stainless Steel Nut | 0000000 | 0000000 |

For Tube OD | ||||||
---|---|---|---|---|---|---|
Gasket Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Each | |
2" | 2" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 0000000 |

Flange OD | |||||||
---|---|---|---|---|---|---|---|
For Tube OD | Extra-Support Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Each | |
2" | 2.64" | 2.516" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 0000000 |

Flange OD | |||||||
---|---|---|---|---|---|---|---|
For Tube OD | Extra-Support Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Each | |
2" | 2.64" | 2.516" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 0000000 |
Extra-High-Polish Metal Quick-Clamp Sanitary Tube Fittings

- For Use With: Air, Beverage, Dairy, Deionized Water, Food, Pharmaceuticals, Water
- Temperature Range: See Gaskets
- Tubing:
Fittings with 700 psi @ 72° F max. pressure: Use with 316/316L stainless steel that meets ASTM A269 or ASTM A270
Fittings with all other max. pressures: Use with 316/316L stainless steel that meets ASTM A249, ASTM A269, or ASTM A270
Gaskets: Use with 304/304L and 316/316L stainless steel - Specifications Met: See table
- Certification: Material Certificate with Traceable Lot Number and Test Report
Polished to a 20 Ra finish, these fittings have an extra-smooth interior that prevents product buildup and inhibits bacteria growth. Use them in pharmaceutical and bioprocessing applications. Also known as tri-clamp fittings, they connect with a clamp, a gasket, and another quick-clamp fitting for a fast and easy way to access your line. Fittings are 316 stainless steel for excellent corrosion resistance.
Fittings with butt-weld end are also known as ferrules; they weld to tubing for a permanent connection.
The pressure rating of the fitting will depend on the clamp you choose.
The temperature rating of the fitting will vary depending on the gasket material you choose.
Note: To complete a connection, you’ll need two quick-clamp fittings, a clamp, and a gasket (all sold separately).
For technical drawings and 3-D models, click on a part number.

For Tube OD | Flange OD | Wall Thick. | Length | Material | Max. Pressure | Specifications Met | Each | |
6" | 6.57" | 1/8" | 1 1/2" | 316/316L Stainless Steel | 150 psi @ 100° F | ASME BPE | 00000000 | 0000000 |

For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
6" | 6.57" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |

For Tube OD | For Flange OD | Bolt Material | Max. Pressure | For Tube Specifications Met | Each | |
6" | 6.57" | 304 Stainless Steel | 300 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |

For Tube OD | For Flange OD | Max. Pressure | Each | |
6" | 6.57" | 430 psi @ 72° F | 0000000 | 000000 |

For Tube OD | For Flange OD | Max. Pressure | Each | |
6" | 6.57" | 430 psi @ 72° F | 0000000 | 0000000 |

For Tube OD | For Flange OD | Bolt Material | Max. Pressure | Specifications Met | Each | |
6" | 6.57" | 316 Stainless Steel | 210 psi @ 72° F | ASME BPVC.VIII | 0000000 | 0000000 |

For Tube OD | For Flange OD | Max. Pressure | Each | |
6" | 6.57" | 430 psi @ 72° F | 0000000 | 0000000 |

For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
6" | 6.57" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 0000000 |
Butt-Weld Fittings for Stainless Steel Tubing
- For Use With: See table
- Temperature Range: See table
- Tubing:
304 Stainless Steel: Use with 304/304L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except DIN EN 10357 fittings with only ASTM A269 or ASTM A270
316 Stainless Steel: Use with 316/316L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except ASME BPE and DIN EN 10357 fittings with only ASTM A269 or ASTM A270 - Specifications Met: See table
Weld these fittings to tubing for a permanent, flush connection that permits smooth flow through a line.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.

Fittings with barbed hose end connect to hose with a hose clamp (sold separately).
316/316L Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|
For Tube OD | For Hose ID | Max. Pressure | Max. Vacuum | Temp. Range | Wall Thick. | For Use With | Each | |
Dull | ||||||||
1/4" | 1/4" | Not Rated | Not Rated | Not Rated | 0.065" | Air, Food, Water | 000000000 | 000000 |
3/8" | 3/8" | Not Rated | Not Rated | Not Rated | 0.063" | Air, Food, Water | 000000000 | 00000 |
1/2" | 1/2" | Not Rated | Not Rated | Not Rated | 0.063" | Air, Food, Water | 000000000 | 00000 |
3/4" | 3/4" | Not Rated | Not Rated | Not Rated | 0.063" | Air, Food, Water | 000000000 | 00000 |

316/316L Stainless Steel | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
For Tube OD (A) | For Tube OD (B) | Max. Pressure | Max. Vacuum | Temp. Range, °F | Wall Thick. | For Use With | Specifications Met | Each | ||
Polished | ||||||||||
1 | 1" | 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 000000 |
Dull | ||||||||||
1 | 1" | 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |


Offset straight reducers are also known as eccentric reducers. They have offset centers so your line can drain.
316/316L Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
For Tube OD (A) | For Tube OD (B) | Max. Pressure | Max. Vacuum | Temp. Range, °F | Wall Thick. | For Use With | Specifications Met | Each | |
Polished | |||||||||
1" | 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 000000 |
Dull | |||||||||
1" | 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |

For Tube OD | Max. Pressure | Max. Vacuum | Temp. Range Min., °F | Temp. Range Max., °F | Lg. | Wall Thick. | For Use With | Specifications Met | Each | |
304/304L Stainless Steel | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Polished | ||||||||||
1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 1/2" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 000000 |
Dull | ||||||||||
1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 1/2" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
316/316L Stainless Steel | ||||||||||
Polished | ||||||||||
1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 1/2" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
Dull | ||||||||||
1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 1/2" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
High-Polish Gasket Fittings for Stainless Steel Tubing

- For Use With: Air, Dairy, Water
- Temperature Range: See Gaskets
- Tubing:
Inch Butt-Weld Fittings and Quick-Clamp Fittings: Use with welded 304/304L or 316/316L stainless steel that meets ASTM 269 or ASTM 27
Metric Butt-Weld Fittings: Use with welded or seamless 316 stainless steel - Specifications Met:
304 Stainless Steel Adapters, Caps, and Nuts: 3-A Certified 63-04
Gaskets: See table
Join these fittings with a threaded nut and a gasket for a secure connection that grants you easy access to your line. Also known as bevel seat fittings, the fittings are beveled to fit snugly around the gasket, creating a vibration-resistant seal. Fittings are polished to a smooth finish on the interior to prevent product buildup and bacterial growth.
304 stainless steel fittings have very good corrosion resistance. They’re 3-A certified to meet sanitary design standards. 316 stainless steel fittings have excellent corrosion resistance.
Note: For a complete connection, you’ll need a threaded straight adapter, an unthreaded straight adapter, a gasket, and a nut (all sold separately unless noted).
For technical drawings and 3-D models, click on a part number.

For Tube OD | ||||||
---|---|---|---|---|---|---|
Gasket Connection | Quick-Clamp Connection | Wall Thick. | Material | Max. Pressure | Each | |
2" | 2" | 0.065" | 316 Stainless Steel | Not Rated | 0000000 | 0000000 |

For Tube OD | |||||||
---|---|---|---|---|---|---|---|
Gasket Connection | Quick-Clamp Connection | Wall Thick. | Material | Max. Pressure | Includes | Each | |
2" | 2" | 0.065" | 316 Stainless Steel | Not Rated | 304 Stainless Steel Nut | 0000000 | 0000000 |

For Tube OD | ID | OD | Thick. | Temp. Range, °F | Color | Specifications Met | Each | |
Buna-N Rubber | ||||||||
---|---|---|---|---|---|---|---|---|
1 1/2" | 1 3/8" | 1 7/8" | 0.33" | -30° to 200° | Black | __ | 0000000 | 00000 |
2" | 1.850" | 2 3/8" | 0.35" | -30° to 200° | Black | __ | 0000000 | 0000 |
PTFE Plastic | ||||||||
1 1/2" | 1 3/8" | 1 7/8" | 0.33" | -100° to 500° | White | 3-A Certified 20-27 | 0000000 | 0000 |
2" | 1.850" | 2 3/8" | 0.35" | -100° to 500° | White | 3-A Certified 20-27 | 0000000 | 0000 |
316 Stainless Steel/PTFE Plastic Blend | ||||||||
1 1/2" | 1 3/8" | 1 7/8" | 0.32" | -350° to 550° | Gray | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550, USP VI Certified | 0000000 | 00000 |
2" | 1.850" | 2 3/8" | 0.32" | -350° to 550° | Gray | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550, USP VI Certified | 0000000 | 00000 |
Ultra-High-Vacuum Flanges and Fittings for Stainless Steel Tubing
- For Use With: Air
- Temperature Range:
Flanges: -300° to 800° F
Gaskets: Not Rated - Tubing: Use with 304/304L and 316/316L stainless steel
- Specifications Met:
Flanges: ASTM A240, ASTM E45, ASTM E12
Gaskets: ASTM B152-179, ASTM F68
Create access points in ultra-high-vacuum lines or chambers by bolting two same-size flanges together with a copper gasket (sold separately) between them. The flanges’ sharp edges dig into the copper gasket and form an extremely tight seal, which means they handle higher vacuum pressures than other high-vacuum fittings with rubber gaskets. Also known as CF, Conflat, and UHV fittings, use them in vacuum coating, heat treating, and drying applications, as well as for leak testing and analyzing gases. They’re stainless steel so they resist rusting.
Butt-weld flanges provide a flush connection for smooth flow through your line.
Bolt kits are required to make a complete connection.
For technical drawings and 3-D models, click on a part number.

Butt-Weld Tube Connection | Flanged Tube Connection | Bolt Hole | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Tube OD | Wall Thick. | For Tube OD | Flange OD | High-Vacuum Flange Size | High Vacuum Connection Type | Bolt Circle Dia. | Dia. | No. of | Bolts Included | No. of Bolt Kits Required | Lg. | Max. Vacuum | Material | Appearance | Each | |
Fixed | ||||||||||||||||
3/4" | 0.049" | 3/4" | 1 21/64" | 16 | CF | 1 1/16" | 11/64" | 6 | No | 1 | 1 1/2" | 1 × 10 -13 torr @72° F | 304 Stainless Steel | Polished | 0000000 | 000000 |

For Tube OD | For Flange OD | Gasket Material | Specifications Met | Each | |
3/4" | 1 21/64" | Copper | ASTM F68 | 0000000 | 00000 |

For Flange OD | For High-Vacuum Flange Size | Bolt Dia. | Thread Size | No. of Bolts Included | No. of Nuts Included | No. of Washers Included | Bolt Material | Each | |
1 21/64" | 16 | 0.164" | 8-32 | 6 | 6 | 12 | 18-8 Stainless Steel | 0000000 | 00000 |