| 止动环 Snapring | 内径 d3 | 剖面 b | 厚度 s | 松弛转速 n= |
| WR230 | 224.7 | 5 | 3 | 340 | WR240 | 234.6 | 5 | 3 | 310 |
| WR260 | 252.4 | 7.5 | 4 | 430 | WR265 | 257.4 | 7.5 | 4 | 410 |
| WR270 | 262.3 | 7.5 | 4 | 380 | WR280 | 272.2 | 7.5 | 4 | 360 |
| WR285 | 277.2 | 7.5 | 4 | 345 | WR290 | 282.1 | 7.5 | 4 | 320 |
| WR300 | 292.1 | 7.5 | 4 | 300 | WR305 | 297.1 | 7.5 | 4 | 290 |
| WR310 | 302 | 7.5 | 4 | 270 | WR320 | 311.9 | 7.5 | 4 | 255 |
