This International Standard specifies requirements for ma-terials used in vulcanized solid rubber sealing rings for petroleum product supply pipe and fittings. It does not apply to petroleum products having an aromatic content higher than 30 % ( VIV) nor to liquids polluted by traces of petroleum products (e.g. pipes for waste water). Some general requirements for the finished joint rings are also given. If there are other requirements for the performance of the finished joint rings, particularly functional tests for the actual sealing system and related pipeline materials, they shall be specified additionally in national standards. This International Standard is applicable to joint rings for all pipeline materials including iron, steel, copper, plastics. In the case of composite sealing rings, depending on their design and after agreement between the manufacturer and the user, the materials used for any rubber parts not coming into contact with petroleum products shall not have to comply with the requirements of 5.7 and 5.8 of this International Standard. Joint rings made from cellular rubber materials or with enclosed voids as part of their design and joint rings with requirements of resistance to flame and to thermal stress are not included in this International Standard.