# ISO 6621-5:2005 — Withdrawn and superseded ISO standards

For ISO 6621-5:2005, item title is Internal combustion engines — Piston rings — Part 5: Quality requirements; status code is 9599; successor is ISO 6621-5:2013; withdrawn / published date is 2005-10-10, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6621-5:2005 _(verified: appears in the quote below)_
- **Item title:** Internal combustion engines — Piston rings — Part 5: Quality requirements _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6621-5:2013
- **Withdrawn / published date:** 2005-10-10 _(verified: appears in the quote below)_

## What the source says

> 40891,IS,,ISO 6621-5:2005,Internal combustion engines — Piston rings — Part 5: Quality requirements,Moteurs à combustion interne — Segments de piston — Partie 5: Exigences de qualité,2005-10-10,2,['43.060.10'],ISO/TC 22,9599,[13037],[55412],['en'],15,"<p>ISO 6621-5:2005 specifies those quality aspects of piston rings that are capable of definition but not normally found on a drawing specification.</p><p>It covers the following:</p><ul><li>single-piece piston rings of grey cast iron or steel;</li><li>multi-piece piston rings (oil control rings) consisting of cast iron parts and spring components;</li><li>single-piece and multi-piece oil control rings of steel, i.e. oil control rings in the fo

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).