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Activair.cz > Products > Vacuum componets – ISO-KF (NW), ISO-K, ISO-F, CF > KF (NW) Flanges & Components > O-Rings & Centering Rings > KF (QF) Centering Rings (Aluminum)
KF (QF) Centering Rings (Aluminum)
These centering rings are used for mating KF flanges and include both the centering ring and o-ring. The KF (QF) flange is used for through- or foreline vacuum plumbing and for simple HV chamber ports.
KF Centering Rings Feature:
- Rings available in stainless steel, brass, or aluminum
- Stainless steel and aluminum centering rings available with either fluorocarbon or Buna-N o-rings
- Brass centering rings available with Buna-N o-rings only
| Flange Size | Dim A | Dim B | O-Ring Mat'l |
Weight kg |
| KF10 | 9.4 | 17 | Buna-N | 0.11 |
| KF16 | 16.1 | 17 | Buna-N | 0.11 |
| KF25 | 23.5 | 26 | Buna-N | 0.11 |
| KF40 | 38.4 | 40.9 | Buna-N | 0.11 |
| KF50 | 49.4 | 51.9 | Buna-N | 0.11 |
| KF10 | 9.4 | 11.9 | Viton | 0.11 |
| KF16 | 16.1 | 17 | Viton | 0.11 |
| KF25 | 23.5 | 26 | Viton | 0.11 |
| KF40 | 38.4 | 40.9 | Viton | 0.11 |
| KF50 | 49.4 | 51.9 | Viton | 0.11 |
