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Over Pressure Rings
Activair.cz > Products > Vacuum componets > KF (NW) Flanges & Components > O-Rings & Centering Rings > Over Pressure Rings
Over Pressure Rings fit around the outside diameter of a QF Centerings Ring to help retain the oring if a system is exposed to a sudden burst of pressure.
| Flange Size | Dim A | Dim B | Dim C |
| KF16 | 31.8 | 30.2 | 8.9 |
| KF25 | 42.2 | 40.1 | 8.9 |
| KF40 | 57.2 | 55.1 | 8.9 |
| KF50 | 69.9 | 66.6 | 3.8 |
