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AS568-012 O-Ring Size
000 series · 1/16" cross section · Pneumatics, instrumentation, small static seals
Inside diameter × cross section
9.25 × 1.78 mm
0.364″ × 0.07″ ·
outside diameter 12.8 mm (0.504″)
Dimensions
| Dimension | Inches | Millimetres |
|---|---|---|
| Inside diameter (ID) | 0.364″ | 9.25 mm |
| Cross section (CS) | 0.07″ | 1.78 mm |
| Outside diameter (OD) | 0.504″ | 12.8 mm |
Outside diameter is not measured, it is derived: OD = ID + 2 × CS.
If your measured OD disagrees with this, trust the ID and cross section — measuring
across the outside of a flexible ring is the least reliable of the three.
If you measured a used one
A ring pulled out of service will measure smaller than 9.25 mm, because compression set is permanent. If your measurement came in a little under this and the cross section roughly matches, -012 is very likely still the correct part. Ordering the size your worn ring measures is how the same failure repeats. More on this →
Nearby sizes in the 000 series
These share the same 1/16" cross section, so if the thickness is right but the diameter is off, your ring is probably one of these.
| Dash | ID (mm) | ID (in) | OD (mm) |
|---|---|---|---|
| -013 | 10.82 | 0.426″ | 14.38 |
| -011 | 7.65 | 0.301″ | 11.2 |
| -010 | 6.07 | 0.239″ | 9.63 |
| -014 | 12.42 | 0.489″ | 15.98 |