AS568-277 O-Ring
Inside diameter 11.484″
Cross-section 0.139″
Outside diameter 11.762″
Metric (ID × CS) 291.69 × 3.53 mm
OD is derived: ID + 2 × CS = 11.484″ + 2 × 0.139″ = 11.762″.
Neighboring sizes (CS 0.139″ series)
| Dash | ID | OD | ID mm | vs -277 |
|---|---|---|---|---|
| -275 | 10.484″ | 10.762″ | 266.29 | ID −1.000″ |
| -276 | 10.984″ | 11.262″ | 278.99 | ID −0.500″ |
| -277 | 11.484″ | 11.762″ | 291.69 | — |
| -278 | 11.984″ | 12.262″ | 304.39 | ID +0.500″ |
| -279 | 12.984″ | 13.262″ | 329.79 | ID +1.500″ |