| 型号 | 内径 | 外径 | 厚度 |
|---|---|---|---|
| FR188ZZ | 6.35 | 12.7 | 3.175 |
| FR188 | 6.35 | 12.7 | 3.175 |
| FR168ZZS | 6.35 | 9.525 | 3.175 |
| FR168 | 6.35 | 9.525 | 3.175 |
| FR166ZZ | 4.762 | 9.525 | 3.175 |
| FR166 | 4.762 | 9.525 | 3.175 |
| R188ZZ | 6.35 | 12.7 | 3.175 |
| R188 | 6.35 | 12.7 | 3.175 |
| R168ZZS | 6.35 | 9.525 | 3.175 |
| R168 | 6.35 | 9.525 | 3.175 |
| R166ZZ | 4.762 | 9.525 | 3.175 |
| R166 | 4.762 | 9.525 | 3.175 |
