OFHC Annealed gasket
CF Flanges
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| Model No. | CF16CGA | CF25CGA | CF35CGA | CF50CGA | CF63CGA | CF80CGA | CF100CGA | CF125CGA | CF150CGA | CF200CGA | CF250CGA | CF275CGA | CF300CGA | CF300CGA-14" | CF350CGA |
| Parts No. | 213105N1 | 213106N1 | 213107N1 | 213109N1 | 213110N1 | 213111N1 | 213112N1 | 213113N1 | 213114N1 | 213116N1 | 213117N2 | 213117N1 | 213118N2 | 213118N1 | 213120N1 |
| A | 21.3 | 32.8 | 48.2 | 61.6 | 82.4 | 91.4 | 120.5 | 141.4 | 171.1 | 222 | 272.9 | 294.4 | 326 | 313.1 | 376.7 |
| B | 16 | 25.6 | 36.9 | 50.9 | 63.5 | 76.4 | 101.7 | 127.2 | 152.5 | 203.3 | 254.2 | 274.1 | 305 | 300 | 356.5 |
| C | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Fit Flange | CF16 | CF25 | CF35 | CF50 | CF63 | CF80 | CF100 | CF125 | CF150 | CF200 | CF250 | CF275 | CF300 | CF300-14" | CF350 |
| Inch spec. | 1-1/3" | 2-1/8" | 2-3/4" | 3-3/8" | 4-1/2" | 4-5/8" | 6" | 6-3/4" | 8" | 10" | 12" | 13-1/4" | 14-1/2" | 14" | 16-1/2" |
| Pack Quantity | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 1 | 1 |
| Select | Model No. | Parts No. | A | B | C | Fit Flange | Inch spec. | Pack Quantity |
| CF16CGA | 213105N1 | 21.3 | 16 | 2 | CF16 | 1-1/3" | 5 | |
| CF25CGA | 213106N1 | 32.8 | 25.6 | 2 | CF25 | 2-1/8" | 5 | |
| CF35CGA | 213107N1 | 48.2 | 36.9 | 2 | CF35 | 2-3/4" | 5 | |
| CF50CGA | 213109N1 | 61.6 | 50.9 | 2 | CF50 | 3-3/8" | 5 | |
| CF63CGA | 213110N1 | 82.4 | 63.5 | 2 | CF63 | 4-1/2" | 5 | |
| CF80CGA | 213111N1 | 91.4 | 76.4 | 2 | CF80 | 4-5/8" | 5 | |
| CF100CGA | 213112N1 | 120.5 | 101.7 | 2 | CF100 | 6" | 5 | |
| CF125CGA | 213113N1 | 141.4 | 127.2 | 2 | CF125 | 6-3/4" | 5 | |
| CF150CGA | 213114N1 | 171.1 | 152.5 | 2 | CF150 | 8" | 5 | |
| CF200CGA | 213116N1 | 222 | 203.3 | 2 | CF200 | 10" | 5 | |
| CF250CGA | 213117N2 | 272.9 | 254.2 | 2 | CF250 | 12" | 1 | |
| CF275CGA | 213117N1 | 294.4 | 274.1 | 2 | CF275 | 13-1/4" | 1 | |
| CF300CGA | 213118N2 | 326 | 305 | 2 | CF300 | 14-1/2" | 1 | |
| CF300CGA-14" | 213118N1 | 313.1 | 300 | 2 | CF300-14" | 14" | 1 | |
| CF350CGA | 213120N1 | 376.7 | 356.5 | 2 | CF350 | 16-1/2" | 1 |
OFHC Annealed gasket of CF flange is the most widely used for high vacuum and UHV applications. They are impermeable to gases and withstand moderately high temperatures indefinitely. They make in UHV leak tight seal between two CF flanges.
