AS568-318 O-Ring
Inside diameter 0.975″
Cross-section 0.210″
Outside diameter 1.395″
Metric (ID × CS) 24.76 × 5.33 mm
OD is derived: ID + 2 × CS = 0.975″ + 2 × 0.210″ = 1.395″.
Neighboring sizes (CS 0.210″ series)
| Dash | ID | OD | ID mm | vs -318 |
|---|---|---|---|---|
| -316 | 0.850″ | 1.270″ | 21.59 | ID −0.125″ |
| -317 | 0.912″ | 1.332″ | 23.16 | ID −0.063″ |
| -318 | 0.975″ | 1.395″ | 24.76 | — |
| -319 | 1.037″ | 1.457″ | 26.34 | ID +0.062″ |
| -320 | 1.100″ | 1.520″ | 27.94 | ID +0.125″ |