# ISO 7751:1991 — Withdrawn and superseded ISO standards For ISO 7751:1991, item title is Rubber and plastics hoses and hose assemblies — Ratios of proof and burst pressure to maximum working pressure; status code is 9599; successor is ISO 7751:2016; withdrawn / published date is 1991-11-07, recorded from its source on 2026-08-05. - **Identifier:** ISO 7751:1991 _(verified: appears in the quote below)_ - **Item title:** Rubber and plastics hoses and hose assemblies — Ratios of proof and burst pressure to maximum working pressure _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 7751:2016 - **Withdrawn / published date:** 1991-11-07 _(verified: appears in the quote below)_ ## What the source says > 14599,IS,,ISO 7751:1991,Rubber and plastics hoses and hose assemblies — Ratios of proof and burst pressure to maximum working pressure,Tuyaux et flexibles en caoutchouc et en plastique — Rapports des pressions d'épreuve et d'éclatement à la pression maximale de service,1991-11-07,2,['23.040.70'],ISO/TC 45/SC 1,9599,[14598],[68054],"['en','fr']",1,
Specifies only ratios. The methods to perform the proof and burst tests are specified in ISO 1402. This second edition cancels and replaces the first edition (1983).
## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).