VAC-U-FLANGE® Flanges (CF)
Available in solid (non-rotatable) and multi-piece (rotatable) styles, as well as double-sided and zero-length adapter versions. Typically used in ultra-high vacuum applications, VAC-U-FLANGE® flanges are designed to conform to industry standard knife edge seal style flanges and are compatible with MDC , Conflat® and flanges from other manufacturers. Huntington flanges meet or exceed industry standards for form, fit & function.
To order please use “Quick Quote” link this page, or for multiple items use our full
275 Series, 2.75″ OD, VAC-U-FLANGE® Flanges
| Nom OD “A” |
Flange OD |
Bolt Circle “B” |
Thickness “C” |
Set Back “D” |
Blank Wht. (lbs.) |
Bored Wht. (lbs.) |
# of Bolt Holes |
Clearance Holes (dia.) |
Tapped Holes |
|---|---|---|---|---|---|---|---|---|---|
| 2-3/4″ | 2.75″ | 2.31″ | 0.50″ | .209″ | 1.0 | 0.75 | 6 | 0.27″ | 1/4-28 |
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Configuration Chart
| Description | Tube Size | Part Number | Description | Tube Size | Part Number |
|---|---|---|---|---|---|
| Flange, Blank | – | 275-000 | Rotatable Flange, Blank | – | 275-000-R |
| Flange, Bored | 1/4″ | 275-025 | Rotatable Flange, Bored | 1/4″ | 275-025-R |
| Flange, Bored | 1/2″ | 275-050 | Rotatable Flange, Bored | 1/2″ | 275-050-R |
| Flange, Bored | 3/4″ | 275-075 | Rotatable Flange, Bored | 3/4″ | 275-075-R |
| Flange, Bored | 1″ | 275-100 | Rotatable Flange, Bored | 1″ | 275-100-R |
| Flange, Bored | 1-1/4″ | 275-125 | Rotatable Flange, Bored | 1-1/4″ | 275-125-R |
| Flange, Bored | 1-1/2″ | 275-150 | Rotatable Flange, Bored | 1-1/2″ | 275-150-R |
| Flange, Blank, Tapped | – | 275-000-T | Rotatable Flange, Blank, Tapped | – | 275-000-RT |
| Flange, Bored, Tapped | 1/4″ | 275-025-T | Rotatable Flange, Bored, Tapped | 1/4″ | 275-025-RT |
| Flange, Bored, Tapped | 1/2″ | 275-050-T | Rotatable Flange, Bored, Tapped | 1/2″ | 275-050-RT |
| Flange, Bored, Tapped | 3/4″ | 275-075-T | Rotatable Flange, Bored, Tapped | 3/4″ | 275-075-RT |
| Flange, Bored, Tapped | 1″ | 275-100-T | Rotatable Flange, Bored, Tapped | 1″ | 275-100-RT |
| Flange, Bored, Tapped | 1-1/4″ | 275-125-T | Rotatable Flange, Bored, Tapped | 1-1/4″ | 275-125-RT |
| Flange, Bored, Tapped | 1-1/2″ | 275-150-T | Rotatable Flange, Bored, Tapped | 1-1/2″ | 275-150-RT |
