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ISO Approvals / Compliance

​​Chesterton has been independently audited for over 20 years to certify that our systems meet or exceed standards of customer satisfaction with a focus on continuous improvement.


A.W. Chesterton Company has long been committed to Quality and Environmental ISO®​ standards* and was, in fact, the first seal manufacturer in the U.S. to achieve ISO 9001 certification and the first in its industry to be registered to ISO 14001.​

  • ​ISO 9001 Certified: US, Mexico, Brazil, Chile, Sweden, Hungary, and Munich
  • ISO 14001 Certified: Plants in Massachusetts, USA; Sweden and Mexico*
  • Internal and external quality system audits
  • Use Continuous Improvement methodologies (i.e., Lean, Six Sigma, Advanced Product Quality Planning, etc.)
  • Approved supplier to the nuclear industry

T​o other compliance documents, visit the Chesterton Literature Library​.

*ISO is a registered trademark of the International Organization for Standardization​


Chesterton ISO Approvals