This specification controls surface condition, manufacturing defects and inspection requirements, and defines methods of measurement for elastomeric toroidal sealing rings (O-rings) for static (including gasket) applications.

Purpose:

To establish standards for manufacture and inspection of elastomeric toroidal sealing rings, preformed packings (commonly known as O-rings).

Limitations:

The specification refers only to O-rings produced by moulding processes and does not cover scarf-jointed O-rings manufactured from fully-cured round cords.