AS568-121 O-Ring
Inside diameter 1.049″
Cross-section 0.103″
Outside diameter 1.255″
Metric (ID × CS) 26.64 × 2.62 mm
OD is derived: ID + 2 × CS = 1.049″ + 2 × 0.103″ = 1.255″.
Neighboring sizes (CS 0.103″ series)
| Dash | ID | OD | ID mm | vs -121 |
|---|---|---|---|---|
| -119 | 0.924″ | 1.130″ | 23.47 | ID −0.125″ |
| -120 | 0.987″ | 1.193″ | 25.07 | ID −0.062″ |
| -121 | 1.049″ | 1.255″ | 26.64 | — |
| -122 | 1.112″ | 1.318″ | 28.24 | ID +0.063″ |
| -123 | 1.174″ | 1.380″ | 29.82 | ID +0.125″ |