| Model No. | Center ring | O-Ring | A | B | C | Part No. |
| KF-CROSC-10VS | 304 | Viton | 12 | 3.9 | 8 | 811501011-0010 |
| KF-CROSC-16VS | 304 | Viton | 17 | 3.9 | 8 | 811502011-0016 |
| KF-CROSC-25VS | 304 | Viton | 26 | 3.9 | 8 | 811503011-0025 |
| KF-CROSC-40VS | 304 | Viton | 41 | 3.9 | 8 | 811504011-0040 |
| KF-CROSC-50VS | 304 | Viton | 52 | 3.9 | 8 | 811505011-0050 |
| KF-CROSC-10NS | 304 | NBR | 12 | 3.9 | 8 | 811501032-0010 |
| KF-CROSC-16NS | 304 | NBR | 17 | 3.9 | 8 | 811502032-0016 |
| KF-CROSC-25NS | 304 | NBR | 26 | 3.9 | 8 | 811503032-0025 |
| KF-CROSC-40NS | 304 | NBR | 41 | 3.9 | 8 | 811504032-0040 |
| KF-CROSC-50NS | 304 | NBR | 52 | 3.9 | 8 | 811505032-0050 |
