# ISO 6623:1986 — Withdrawn and superseded ISO standards

For ISO 6623:1986, item title is Internal combustion engines — Piston rings — Scraper rings; status code is 9599; successor is ISO/DIS 6621-2 | ISO 6623:2004 | ISO/DIS 8847 | ISO/DIS 6623; withdrawn / published date is 1986-08-21, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6623:1986 _(verified: appears in the quote below)_
- **Item title:** Internal combustion engines — Piston rings — Scraper rings _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/DIS 6621-2 | ISO 6623:2004 | ISO/DIS 8847 | ISO/DIS 6623
- **Withdrawn / published date:** 1986-08-21 _(verified: appears in the quote below)_

## What the source says

> 13040,IS,,ISO 6623:1986,Internal combustion engines — Piston rings — Scraper rings,Moteurs à combustion interne — Segments de piston — Segments racleurs mixtes,1986-08-21,1,['43.060.10'],ISO/TC 22,9599,,"[26897,38432,27318,26899]","['en','fr']",13,"<p>Specifies the essential dimensional features of N-, NM-, E- and EM-scraper piston ring types. Dimension tables 7 and 8 offer the choice of two radial wall thicknesses: 'regular' (table 7) and 'D/22' (table 8). The requirements apply to scraper rings for reciprocating internal combustion piston engines, up to and including 200 mm diameter. May be used for piston rings for compressors working under similar conditions.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).