AS568-261 O-Ring
Inside diameter 6.734″
Cross-section 0.139″
Outside diameter 7.012″
Metric (ID × CS) 171.04 × 3.53 mm
OD is derived: ID + 2 × CS = 6.734″ + 2 × 0.139″ = 7.012″.
Neighboring sizes (CS 0.139″ series)
| Dash | ID | OD | ID mm | vs -261 |
|---|---|---|---|---|
| -259 | 6.234″ | 6.512″ | 158.34 | ID −0.500″ |
| -260 | 6.484″ | 6.762″ | 164.69 | ID −0.250″ |
| -261 | 6.734″ | 7.012″ | 171.04 | — |
| -262 | 6.984″ | 7.262″ | 177.39 | ID +0.250″ |
| -263 | 7.234″ | 7.512″ | 183.74 | ID +0.500″ |