# ISO/R 812:1968 — Withdrawn and superseded ISO standards For ISO/R 812:1968, item title is Method of test for temperature limit of brittleness for vulcanized rubbers; status code is 9599; successor is ISO 812:1991; withdrawn / published date is 1968-09-01, recorded from its source on 2026-08-05. - **Identifier:** ISO/R 812:1968 _(verified: appears in the quote below)_ - **Item title:** Method of test for temperature limit of brittleness for vulcanized rubbers _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 812:1991 - **Withdrawn / published date:** 1968-09-01 _(verified: appears in the quote below)_ ## What the source says > 5157,R,,ISO/R 812:1968,Method of test for temperature limit of brittleness for vulcanized rubbers,Méthode d'essai pour la détermination de la température limite de non fragilité des caoutchoucs vulcanisés,1968-09-01,1,['83.060'],ISO/TC 45,9599,,[5158],"['en','fr']",5, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).