ISO 3601 is a globally valid standard for the dimensioning, selection and use of O-rings for general sealing applications. The standard includes both imperial and metric dimensions in order to take both measurement systems into account.
In this respect, it combines the dimension tables of DIN 3771 and AS568. The standard consists of five parts that cover a wide range of regulations:
- Inner diameter, cord thickness, dimensions and tolerances
- Installation spaces and general applications
- Shape and surface applications
- Selection and types of support rings
- Requirements for elastomer materials