AS568-345 O-Ring
Inside diameter 3.975″
Cross-section 0.210″
Outside diameter 4.395″
Metric (ID × CS) 100.97 × 5.33 mm
OD is derived: ID + 2 × CS = 3.975″ + 2 × 0.210″ = 4.395″.
Neighboring sizes (CS 0.210″ series)
| Dash | ID | OD | ID mm | vs -345 |
|---|---|---|---|---|
| -343 | 3.725″ | 4.145″ | 94.61 | ID −0.250″ |
| -344 | 3.850″ | 4.270″ | 97.79 | ID −0.125″ |
| -345 | 3.975″ | 4.395″ | 100.97 | — |
| -346 | 4.100″ | 4.520″ | 104.14 | ID +0.125″ |
| -347 | 4.225″ | 4.645″ | 107.31 | ID +0.250″ |