AS568-254 O-Ring
Inside diameter 5.484″
Cross-section 0.139″
Outside diameter 5.762″
Metric (ID × CS) 139.29 × 3.53 mm
OD is derived: ID + 2 × CS = 5.484″ + 2 × 0.139″ = 5.762″.
Neighboring sizes (CS 0.139″ series)
| Dash | ID | OD | ID mm | vs -254 |
|---|---|---|---|---|
| -252 | 5.234″ | 5.512″ | 132.94 | ID −0.250″ |
| -253 | 5.359″ | 5.637″ | 136.12 | ID −0.125″ |
| -254 | 5.484″ | 5.762″ | 139.29 | — |
| -255 | 5.609″ | 5.887″ | 142.47 | ID +0.125″ |
| -256 | 5.734″ | 6.012″ | 145.64 | ID +0.250″ |