# ISO 6624-1:2001 — Withdrawn and superseded ISO standards For ISO 6624-1:2001, item title is Internal combustion engines — Piston rings — Part 1: Keystone rings made of cast iron; status code is 9599; successor is ISO 6624-1:2017; withdrawn / published date is 2001-08-09, recorded from its source on 2026-08-05. - **Identifier:** ISO 6624-1:2001 _(verified: appears in the quote below)_ - **Item title:** Internal combustion engines — Piston rings — Part 1: Keystone rings made of cast iron _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6624-1:2017 - **Withdrawn / published date:** 2001-08-09 _(verified: appears in the quote below)_ ## What the source says > 26900,IS,,ISO 6624-1:2001,Internal combustion engines — Piston rings — Part 1: Keystone rings made of cast iron,Moteurs à combustion interne — Segments de piston — Partie 1: Segments trapézoïdaux en fonte,2001-08-09,2,['43.060.10'],ISO/TC 22/SC 34,9599,[13041],[67904],['en'],26, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).