AS568-442 O-Ring
Inside diameter 7.225″
Cross-section 0.275″
Outside diameter 7.775″
Metric (ID × CS) 183.51 × 6.99 mm
OD is derived: ID + 2 × CS = 7.225″ + 2 × 0.275″ = 7.775″.
Neighboring sizes (CS 0.275″ series)
| Dash | ID | OD | ID mm | vs -442 |
|---|---|---|---|---|
| -440 | 6.725″ | 7.275″ | 170.81 | ID −0.500″ |
| -441 | 6.975″ | 7.525″ | 177.16 | ID −0.250″ |
| -442 | 7.225″ | 7.775″ | 183.51 | — |
| -443 | 7.475″ | 8.025″ | 189.86 | ID +0.250″ |
| -444 | 7.725″ | 8.275″ | 196.21 | ID +0.500″ |
Same ID, other cross-sections
- AS568-366 — same 7.225″ ID with a 0.210″ cross-section (OD 7.645″)