AS568-178 O-Ring
Inside diameter 9.737″
Cross-section 0.103″
Outside diameter 9.943″
Metric (ID × CS) 247.32 × 2.62 mm
OD is derived: ID + 2 × CS = 9.737″ + 2 × 0.103″ = 9.943″.
Neighboring sizes (CS 0.103″ series)
| Dash | ID | OD | ID mm | vs -178 |
|---|---|---|---|---|
| -176 | 9.237″ | 9.443″ | 234.62 | ID −0.500″ |
| -177 | 9.487″ | 9.693″ | 240.97 | ID −0.250″ |
| -178 | 9.737″ | 9.943″ | 247.32 | — |