ISO INTERNATIONAL STANDARD 9691 First edition 1992-11-15 Rubber --- Recommendations for the workmanship of pipe joint rings -.. Description and classification of imperfections Caoutchouc --- Recommandations concernant I'execution des garnitures d'étancheite pour joint de canalisation - Description et classification des imperfections Reference number ISO 9691:1992(E) S( Not for Resale working permitted without license from IHS ISO 9691:1992(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with IsO, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IsO 9691 was prepared by Technical Committee Iso/TC 45, Rubber and rubber products, Sub-Committee SC 4, Miscel- laneousproducts Annex A of this International Standard is for information only. @ IsO 1992 permission in writing from the publisher. Internatlonai Organization for Standardization Case Postale 56: CH-1211 Geneve 20 : Switzerland Printed tn Switzerland ii Copyright International Organization for Standardization Not for Resale without license from IHS 1S0 9691:1992(E) Introduction International Standards such as ISO 463311], ISO 6447[2] and IsO 6448[3] (see bibliography) for rubber joint rings for pipelines include some gen- tions". ments, this International Standard describes manufacturing imperfec- tions which could arise during the production of pipe joint rings, and lists criteria by which the quality of workmanship can be assessed. It should be stressed, however, that this International Standard is not a specifi- cation. Whether an imperfection is to be considered as a defect will ul- timately have to be agreed upon between the interested parties (see clause 4). ili No reproductic n or networking permitted without license from IHS Not for Resale