# ISO 3669:2017 — Withdrawn and superseded ISO standards

For ISO 3669:2017, item title is Vacuum technology — Bakeable flanges — Dimensions of knife-edge flanges; status code is 9599; successor is ISO 3669:2020; withdrawn / published date is 2017-08-10, recorded from its source on 2026-08-05.

- **Identifier:** ISO 3669:2017 _(verified: appears in the quote below)_
- **Item title:** Vacuum technology — Bakeable flanges — Dimensions of knife-edge flanges _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 3669:2020
- **Withdrawn / published date:** 2017-08-10 _(verified: appears in the quote below)_

## What the source says

> 65135,IS,,ISO 3669:2017,Vacuum technology — Bakeable flanges — Dimensions of knife-edge flanges,Technique du vide — Brides étuvables — Dimensions des brides à guillotine,2017-08-10,2,['23.160'],ISO/TC 112,9599,[40193],[79413],"['en','fr']",7,<p>ISO 3669:2017 specifies the dimensions of fixed or rotatable bolted knife-edge flanges used in vacuum systems for pressures ranging from atmospheric toas low as 10<sup>−11</sup> Pa.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).