O-ring standard

SAE AS568

AS568 is an SAE size standard for O-rings using dash-number designations with nominal inside diameters and cross-sections.

United States / Aerospace & industrialRegion / use
Current revision: AS568FStatus

What this standard covers

AS568 is an SAE size standard for O-rings using dash-number designations with nominal inside diameters and cross-sections.

Using it for cross-reference

Use the standard's actual designation and nominal dimensions when available. Do not infer a guaranteed equivalent solely from millimetre rounding.

Next tool

Our O-Ring Cross Reference currently performs dimensional matching against the AS568 dataset. Standard-to-standard mappings are being added only when the source data can be verified.

Primary / reference source

Open source / standard reference

The official standards themselves may require purchase or licensed access. This page summarizes publicly available scope/status information and does not reproduce proprietary standards text.