# ISO/TR 6622-2:1988 — Withdrawn and superseded ISO standards

For ISO/TR 6622-2:1988, item title is Internal combustion engines — Piston rings — Part 2: Rectangular rings with narrow ring width; status code is 9599; successor is ISO/DIS 6622-2 | ISO 6622-2:2003; withdrawn / published date is 1988-12-29, recorded from its source on 2026-08-05.

- **Identifier:** ISO/TR 6622-2:1988 _(verified: appears in the quote below)_
- **Item title:** Internal combustion engines — Piston rings — Part 2: Rectangular rings with narrow ring width _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/DIS 6622-2 | ISO 6622-2:2003
- **Withdrawn / published date:** 1988-12-29 _(verified: appears in the quote below)_

## What the source says

> 13039,TR,,ISO/TR 6622-2:1988,Internal combustion engines — Piston rings — Part 2: Rectangular rings with narrow ring width,Moteurs à combustion interne — Segments de piston — Partie 2: Segments rectangulaires de section réduite,1988-12-29,1,['43.060.10'],ISO/TC 22,9599,,"[26898,38358]","['en','fr']",14,"<p>This Technical Report specifies the essential dimensional features of R-, B- and M-rectangular piston ring types with narrow ring width. Dimension tables 8 and 9 allow for the use of cast iron (table 8) or steel (table 9). The requirements of this Technical Report apply to rectangular rings for reciprocating internal combustion piston engines, up to and including 90 mm diameter for cast ir

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).