In accordance with the IEC/ISO Directives, each International Standard is reviewed periodically.    

By decision of the ISO Technical Management Board, the decision whether to confirm, revise or withdraw an International Standard will be based on the standard’s market relevance and the degree to which it has been adopted at the national level and/or used in practice.  The attached PDF file contains ISO 6547,Hydraulic fluid power — Cylinders — Piston seal housings incorporating bearing rings — Dimensions and tolerances.

• https://nfpahub.com/wp-content/uploads/_pda/2023/07/ISO_6547_1981_ed.1_-_id.12941_Publication_PDF_Image_based_PDF_600dpi_en.PDF.pdf
• https://nfpahub.com/wp-content/uploads/2022/06/ISO_commenting_template.doc

To help determine how the U.S. should respond, would you please review the document, then vote by 2023-11-01.  It is extremely important that you answer all the questions on the form, as it is difficult to develop a meaningful U.S. position without your complete feedback.

Permission is granted by the American National Standards Institute to electronically reproduce this International Standard for the purpose of review and comment related to the preparation of the U.S. position, provided this notice is included.  All other rights are reserved.  If you need a copy of any of the documents referenced in this International Standard or if you would like any further information, please contact aforsythe@nfpa.com.