AS568-231 O-Ring
Inside diameter 2.609″
Cross-section 0.139″
Outside diameter 2.887″
Metric (ID × CS) 66.27 × 3.53 mm
OD is derived: ID + 2 × CS = 2.609″ + 2 × 0.139″ = 2.887″.
Neighboring sizes (CS 0.139″ series)
| Dash | ID | OD | ID mm | vs -231 |
|---|---|---|---|---|
| -229 | 2.359″ | 2.637″ | 59.92 | ID −0.250″ |
| -230 | 2.484″ | 2.762″ | 63.09 | ID −0.125″ |
| -231 | 2.609″ | 2.887″ | 66.27 | — |
| -232 | 2.734″ | 3.012″ | 69.44 | ID +0.125″ |
| -233 | 2.859″ | 3.137″ | 72.62 | ID +0.250″ |