ISO/TC 45/SC 4/WG 2 - Rubber seals

This document specifies requirements for elastomeric materials used in seals for supply pipes and fittings, ancillaries and valves at operating temperatures in general from ?5 °C up to 50 °C and in special cases from ?15 °C up to 50 °C, for the following: a) general applications (see Table 4, type G series): — gaseous fuel [manufactured, natural and liquefied petroleum gas (LPG) in the gaseous phase], — hydrocarbon fluids with an aromatic content up to 30 % (by volume), including LPG in the liquid phase; b) special applications (see Table 4, type H): — materials suitable for carrying gaseous fuels containing gas condensates and hydrocarbon fluids of unrestricted aromatic content. General requirements for finished joint seals are also given; any additional requirements called for by the particular application are specified in the relevant product standards, taking into account that the performance of pipe joints is a function of the seal material properties, seal geometry and pipe joint design. This document is used where appropriate with product standards which specify performance requirements for joints. This document is applicable to joint seals for all pipeline materials, including iron, steel, copper and plastics. In the case of composite sealing rings, the requirements in 5.2.8 and 5.2.9 apply only when the materials used for any elastomeric parts come into contact with gaseous fuel or hydrocarbon fluid. Elongation at break, tensile strength, compression set and stress relaxation requirements for materials of hardness classes 80 and 90 apply only when they constitute that part of the seal which participates directly in the sealing function or contributes directly to long-term stability. This document is not applicable to the following: — seals made from cellular materials; — seals with enclosed voids as part of their design; — seals required to be resistant to flame or to thermal stress; — seals which contain splices joining pre-vulcanized profile ends.

ISO 9631:2018 specifies material requirements for vulcanized rubber seals for hot drinking and non-drinking water supply (up to 110 °C). The different seal designations specified are defined according to seal type, seal application and the requirements for a particular seal (see Table 2). General requirements for finished joint seals are also given. Any additional requirements called for by the particular application are specified in the relevant product standards, taking into account that the performance of pipe joints is a function of the seal material properties, seal geometry and pipe joint design. This document is intended to be used where appropriate, in conjunction with product standards which specify performance requirements for joints. ISO 9631:2018 is applicable to joint seals for use with all pipeline materials, including metals, clay, fibre cement, concrete, reinforced concrete, plastics and glass-reinforced plastics. ISO 9631:2018 is applicable to elastomeric components of composite and non-composite seals. In the case of composite seals made from materials with hardness ranging from 76 IRHD to 95 IRHD, the requirements for elongation at break, compression set and stress relaxation apply only when the material participates in the sealing function or contributes to the long-term stability of the seal. The material requirements specified in this document are designed for long term performances and a potential lifetime of 50 years. The lifetime of a sealing depends not only on material performance but also on other parameters which are not defined in this document like the mounting design, the quality of assembly and the combination with operating conditions. Joint rings made from cellular rubber materials are not covered by this document.

ISO 4633:2015 specifies requirements for materials used in vulcanized rubber seals for the following: a) cold drinking-water supplies (up to 50 °C); b) drainage, sewerage, and rainwater systems (continuous flow up to 45 °C and intermittent flow up to 95 °C).

ISO 4635:2011 specifies requirements for material for preformed vulcanized rubber joint seals used between concrete paving sections of highways. It is applicable to seals for joints in new concrete highways as well as to maintenance work on such highways. It does not cover the design or dimensions of seals, but general requirements for finished seals are given.

ISO 23711:2003 specifies requirements for materials used for moulded seals made of thermoplastic elastomers (TPEs) for joints in: thermoplastic piping systems for non-pressure waste water discharge (intermittent flow at up to 95 °C) inside buildings; thermoplastic piping systems for non-pressure underground drainage and sewerage (continuous flow at up to 45 °C and intermittent flow at up to 95 °C); thermoplastic rainwater piping systems. General requirements for finished joint seals are also given; any additional requirements called for by the particular application are specified in the relevant product standards taking into account that the performance of pipe joints is a function of the seal material properties, seal geometry and pipe joint design.

Classifies imperfections in surface and internal imperfections and specifies maximum acceptable limits.

ISO 16010:2005 specifies requirements for elastomeric materials used in seals for supply pipes and fittings, ancillaries and valves at operating temperatures in general from -5 °C up to 50 °C and in special cases from -15 °C up to 50 °C, for the following: a) general applications: gaseous fuel [manufactured, natural and liquefied petroleum gas (LPG) in the gaseous phase], hydrocarbon fluids with an aromatic content up to 30 % (by volume), including LPG in the liquid phase; b) special applications: materials suitable for carrying gaseous fuels containing gas condensates and hydrocarbon fluids of unrestricted aromatic content. General requirements for finished joint seals are also given. This International Standard is applicable to joint seals for all pipeline materials, including iron, steel, copper and plastics. It is not applicable to the following: seals made from cellular materials; seals with enclosed voids as part of their design; seals required to be resistant to flame or to thermal stress; seals which contain splices joining pre-vulcanized profile ends.

ISO 9631:2003 specifies requirements for materials used in vulcanized-rubber seals for hot potable and non-potable water supply (up to 110 °C). The different seal designations specified are defined according to seal type, seal application and the requirements for a particular seal. General requirements for finished joint seals are also given. Any additional requirements called for by the particular application are specified in the relevant product standards, taking into account that the performance of pipe joints is a function of the seal material properties, seal geometry and pipe joint design. This International Standard is intended to be used where appropriate with product standards which specify performance requirements for joints. This International Standard is applicable to joint seals for use with all pipeline materials, including iron, steel, clay, fibre cement, concrete, reinforced concrete, plastics and glass-reinforced plastics. It is applicable to elastomeric components of composite and non-composite seals. In the case of composite seals made from materials with hardnesses ranging from 76 IRHD to 95 IRHD, the requirements for elongation at break, compression set and stress relaxation apply only when the material participates in the sealing function or contributes to the long-term stability of the seal. Joint rings made from cellular rubber materials or with enclosed voids as part of their design are not covered by this International Standard.

This International Standard specifies requirements for materials used in vulcanized rubber seals for cold drinking-water supplies (up to 50 °C); drainage, sewerage and rainwater systems (continuous flow up to 45 °C and intermittent flow up to 95 °C). The different designations of seals specified are defined according to their type, application and requirements. General requirements for finished joint seals are also given: any additional requirements called for by the particular application are specified in the relevant product standards, taking into account that the performance of pipe joints is a function of the seal material properties, seal geometry and pipe joint design. This International Standard is intended to be used where appropriate with product standards which specify performance requirements for joints. This International Standard is applicable to joint seals for all pipeline materials, including iron, steel, clay, fibre cement, concrete, reinforced concrete, plastics and glass-reinforced plastics. It is applicable to elastomeric components of composite or non-composite seals. In the case of composite seals for materials of hardness ranges from 76 IRHD to 95 IRHD, the requirements for elongation at break, compression set and stress relaxation apply only when the material is participating in the sealing function or in the long-term stability of the seal. Joint seals made with an enclosed void as part of their design are included in the scope of this International Standard.

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.

Specifies requirements, but does not apply to the mentioned product with an aromatic content higher than 30 % and liquids polluted by petroleum traces. Other requirements shall be specified in national standards. Iron, steel, copper, plastics are included as pipeline materials. Not included are joint rings made of cellular rubbers. 2 tables with general and optional requirements.

Specification refers to operating temperatures up to 50 °C. Other requirements, particularly functional tests for the actual sealing materials, shall be specified in national standards. Applicable to joint rings for all pipeline materials including iron, steel, copper, plastics. The standard does not include joint rings made from cellular rubbers or with enclosed voids. 2 tables with general and optional requirements.

Specifies material requirements in sealing operations where both resistance to stress relaxation and resistance to weathering are essential. Relates particularly to gaskets of the lock-strip type. Does not give the material requirements for gaskets used for sealing glazing and panels. An annex with figures refers to lip seal pressure measurement.