At Oringone, we are committed to observing the ISO 3601 production standards, which cover essential aspects such as dimensional tolerances and surface finishes.

ISO 3601-1

ISO 3601-1 defines the dimensional tolerances of O-rings into two categories: Class A and Class B.

  • Class A has tighter dimensional tolerances, making them ideal for industrial and aerospace applications where high precision is required.
  • Class B has slightly less stringent tolerances and are suitable for general use.

At Oringone, our quality control process is rigorous. We have developed optical inspection machines that allow us to achieve precise and repeatable measurements, adhering to the tolerances specified by ISO 3601-1.

ISO 3601-3

ISO 3601-3 governs surface finish O-ring standards, specifying the maximum allowable imperfections and surface quality criteria. Originally developed for general O-rings, this standard has been refined to include various degrees of defects depending on the application:

  • Grade N: Acceptance standards for general O-rings.
  • Grade S: It is the level that defined the acceptance standard for O-rings that can be used in industrial and aerospace applications.
  • Grade CS: It is the grade that defines the acceptance standard for O-rings used in special and critical applications, like some special applications in aerospace and aviation.

The same machines used for dimensional control can also simultaneously inspect surfaces for defects, ensuring compliance with ISO 3601-3.

At Oringone, we are dedicated to quality and employing advanced technologies to ensure that our O-rings meet the highest international standards. Since 2012, we have been ISO 9001 certified, a quality management system that guarantees excellence in O-ring production.

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