| 止动环 Snapring | 内径 d3 | 剖面 b | 厚度 s | 松弛转速 n= |
| WR20 | 18.7 | 1.75 | 1.2 | 26000 | WR21 | 19.7 | 1.75 | 1.2 | 23000 |
| WR22 | 20.7 | 1.75 | 1.2 | 21000 | WR24 | 22.5 | 1.75 | 1.2 | 18000 |
| WR25 | 23.5 | 1.75 | 1.2 | 16000 | WR26 | 24.5 | 1.75 | 1.2 | 15000 |
| WR28 | 26.5 | 2.3 | 1.5 | 15000 | WR29 | 27.5 | 2.3 | 1.5 | 14000 |
| WR30 | 28.5 | 2.3 | 1.5 | 13000 | WR32 | 30.2 | 2.3 | 1.5 | 13000 |
| WR35 | 33.2 | 2.3 | 1.5 | 11000 | WR37 | 35.2 | 2.3 | 1.5 | 9200 |
