# ISO 6621-2:1984 — Withdrawn and superseded ISO standards

For ISO 6621-2:1984, item title is Internal combustion engines — Piston rings — Part 2: Inspection measuring principles; status code is 9599; successor is ISO 6621-2:2003; withdrawn / published date is 1984-02-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6621-2:1984 _(verified: appears in the quote below)_
- **Item title:** Internal combustion engines — Piston rings — Part 2: Inspection measuring principles _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6621-2:2003
- **Withdrawn / published date:** 1984-02-01 _(verified: appears in the quote below)_

## What the source says

> 13034,IS,,ISO 6621-2:1984,Internal combustion engines — Piston rings — Part 2: Inspection measuring principles,Moteurs à combustion interne — Segments de piston — Partie 2: Principes de mesure pour inspection,1984-02-01,1,['43.060.10'],ISO/TC 22,9599,,[38437],"['en','fr']",21,<p>This part defines the measuring principles to be used for measuring piston rings. Applies to piston rings up to and including 200 mm diameter for reciprocating internal combustion piston engines. May be used for piston rings for compressors working under analogous conditions. Several figures illustrate shapes and reference quantities of concern.</p>

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).