# ISO 1658:1973 — Withdrawn and superseded ISO standards For ISO 1658:1973, item title is Natural rubber (NR) — Test recipes and evaluation of vulcanization characteristics; status code is 9599; successor is ISO 1658:1994; withdrawn / published date is 1973-12-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 1658:1973 _(verified: appears in the quote below)_ - **Item title:** Natural rubber (NR) — Test recipes and evaluation of vulcanization characteristics _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 1658:1994 - **Withdrawn / published date:** 1973-12-01 _(verified: appears in the quote below)_ ## What the source says > 6276,IS,,ISO 1658:1973,Natural rubber (NR) — Test recipes and evaluation of vulcanization characteristics,Caoutchouc naturel (NR) — Formules et évaluation des propriétés physiques des vulcanisats,1973-12-01,1,['83.060'],ISO/TC 45/SC 3,9599,,[6277],"['en','fr']",3, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).