# ISO 3669:1986 — Withdrawn and superseded ISO standards For ISO 3669:1986, item title is Vacuum technology — Bakable flanges — Dimensions; status code is 9599; successor is ISO/CD 3669 | ISO/NP 3669-1; withdrawn / published date is 1986-02-13, recorded from its source on 2026-08-05. - **Identifier:** ISO 3669:1986 _(verified: appears in the quote below)_ - **Item title:** Vacuum technology — Bakable flanges — Dimensions _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CD 3669 | ISO/NP 3669-1 - **Withdrawn / published date:** 1986-02-13 _(verified: appears in the quote below)_ ## What the source says > 9124,IS,,ISO 3669:1986,Vacuum technology — Bakable flanges — Dimensions,Technique du vide — Brides étuvables — Dimensions,1986-02-13,1,['23.160'],ISO/TC 112,9599,,"[27990,41995]","['en','fr']",5,"

Deals with flanges rigidly or rotatably bolted which are used in vacuum systems. Two series of flanges are specified: a preferred one, the main dimensions of which ensure compatibility with already standardized, non-bakable flanges (see ISO 1609) and a secondary series concerning flanges in common use.

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).