AS568-139 O-Ring
Inside diameter 2.175″
Cross-section 0.103″
Outside diameter 2.381″
Metric (ID × CS) 55.24 × 2.62 mm
OD is derived: ID + 2 × CS = 2.175″ + 2 × 0.103″ = 2.381″.
Neighboring sizes (CS 0.103″ series)
| Dash | ID | OD | ID mm | vs -139 |
|---|---|---|---|---|
| -137 | 2.050″ | 2.256″ | 52.07 | ID −0.125″ |
| -138 | 2.112″ | 2.318″ | 53.64 | ID −0.063″ |
| -139 | 2.175″ | 2.381″ | 55.24 | — |
| -140 | 2.237″ | 2.443″ | 56.82 | ID +0.062″ |
| -141 | 2.300″ | 2.506″ | 58.42 | ID +0.125″ |