# ISO 9631:1991 — Withdrawn and superseded ISO standards For ISO 9631:1991, item title is Rubber seals — Joint rings for hot water supply pipelines up to 110 degrees C — Specification for the material; status code is 9599; successor is ISO 9631:2003; withdrawn / published date is 1991-12-12, recorded from its source on 2026-08-05. - **Identifier:** ISO 9631:1991 _(verified: appears in the quote below)_ - **Item title:** Rubber seals — Joint rings for hot water supply pipelines up to 110 degrees C — Specification for the material _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 9631:2003 - **Withdrawn / published date:** 1991-12-12 _(verified: appears in the quote below)_ ## What the source says > 17445,IS,,ISO 9631:1991,Rubber seals — Joint rings for hot water supply pipelines up to 110 degrees C — Specification for the material,Joints étanches en caoutchouc — Garnitures d'étanchéité destinées aux joints de canalisations pour la fourniture d'eau chaude jusqu'à 110 degrés C — Spécifications pour les matériaux,1991-12-12,1,"['83.140.50','91.140.60']",ISO/TC 45/SC 4,9599,,[37163],"['en','fr']",6,"
Specifies requirements for materials used in vulcanized, solid rubber joint rings. Does not apply to joint rings made from cellular rubber materials or with enclosed voids as part of their design.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).