Cross reference
AS568-251 O-Ring Cross Reference
Nominal AS568 dimensions compared with the closest entries in the currently verified JIS B 2401 P and ISO 3601-1 datasets.
AS568 ID129.770 mm
Cross-section3.530 mm
AS568 OD136.830 mm
Closest dimensional entries
| Standard | Size | ID | CS | OD | ID Δ | CS Δ |
|---|---|---|---|---|---|---|
| JIS B 2401 | P-130 | 129.60 | 5.70 | 141.00 | 0.17 | 2.17 |
| JIS B 2401 | P-132 | 131.60 | 5.70 | 143.00 | 1.83 | 2.17 |
| JIS B 2401 | P-125 | 124.60 | 5.70 | 136.00 | 5.17 | 2.17 |
| JIS B 2401 | P-135 | 134.60 | 5.70 | 146.00 | 4.83 | 2.17 |
| JIS B 2401 | P-120 | 119.60 | 5.70 | 131.00 | 10.17 | 2.17 |
| JIS B 2401 | P-140 | 139.60 | 5.70 | 151.00 | 9.83 | 2.17 |
| JIS B 2401 | P-115 | 114.60 | 5.70 | 126.00 | 15.17 | 2.17 |
| JIS B 2401 | P-145 | 144.60 | 5.70 | 156.00 | 14.83 | 2.17 |
| JIS B 2401 | P-112 | 111.60 | 5.70 | 123.00 | 18.17 | 2.17 |
| JIS B 2401 | P-110 | 109.60 | 5.70 | 121.00 | 20.17 | 2.17 |
These are dimensional comparisons, not automatic standards equivalence or interchangeability recommendations.
Check your groove
Use the AS568 size with the Groove Design Check to review your actual groove dimensions.
Groove Design Check