# ISO 6056:1987 — Withdrawn and superseded ISO standards For ISO 6056:1987, item title is Rubber, vulcanized or thermoplastic — Determination of compression stress relaxation (rings); status code is 9599; successor is ISO 3384:1991; withdrawn / published date is 1987-03-26, recorded from its source on 2026-08-05. - **Identifier:** ISO 6056:1987 _(verified: appears in the quote below)_ - **Item title:** Rubber, vulcanized or thermoplastic — Determination of compression stress relaxation (rings) _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 3384:1991 - **Withdrawn / published date:** 1987-03-26 _(verified: appears in the quote below)_ ## What the source says > 12256,IS,,ISO 6056:1987,"Rubber, vulcanized or thermoplastic — Determination of compression stress relaxation (rings)",Coutchouc vulcanisé ou thermoplastique — Détermination de la relaxation de contrainte en compression (anneaux),1987-03-26,2,['83.060'],ISO/TC 45/SC 2,9599,[12255],[8679],"['en','fr']",4, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).