NW Centering Ring
| Parts No. | Flange Ref. | C/R Material | O-ring Material | O-ring size | A | B | C | D |
| CO-CN-N-10-VS | KF10 | 304 S.S. | VITON | AS-310 | 10 | 12 | 8 | 3.9 |
| CO-CN-N-16-VS | KF16 | 304 S.S. | VITON | AS-314 | 16 | 17 | 8 | 3.9 |
| CO-CN-N-25-VS | KF25 | 304 S.S. | VITON | AS-320 | 25 | 26 | 8 | 3.9 |
| CO-CN-N-40-VS | KF40 | 304 S.S. | VITON | AS-326 | 40 | 41 | 8 | 3.9 |
| CO-CN-N-50-VS | KF50 | 304 S.S. | VITON | AS-330 | 50 | 52 | 8 | 3.9 |