AS568-155 O-Ring
Inside diameter 3.987″
Cross-section 0.103″
Outside diameter 4.193″
Metric (ID × CS) 101.27 × 2.62 mm
OD is derived: ID + 2 × CS = 3.987″ + 2 × 0.103″ = 4.193″.
Neighboring sizes (CS 0.103″ series)
| Dash | ID | OD | ID mm | vs -155 |
|---|---|---|---|---|
| -153 | 3.487″ | 3.693″ | 88.57 | ID −0.500″ |
| -154 | 3.737″ | 3.943″ | 94.92 | ID −0.250″ |
| -155 | 3.987″ | 4.193″ | 101.27 | — |
| -156 | 4.237″ | 4.443″ | 107.62 | ID +0.250″ |
| -157 | 4.487″ | 4.693″ | 113.97 | ID +0.500″ |