83.140.50 - Seals
ICS 83.140.50 Details
Seals
Gummidichtungen. Kunststoffdichtungen
Joints d'étanchéité
Tesnila
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This document 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). The different designations of seals specified are defined according to their type, application, and requirements (see Table 5). 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, with product standards which specify performance requirements for joints. This document 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-M to 95 IRHD-M, 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 document.
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This document specifies requirements and associated test methods for rubber materials used in gas installations, gas equipment and gas appliances in contact with 1st, 2nd and 3rd family combustible gases as classified in EN 437:2018, additionally LPG, bio methane and bio LPG, in the same quality, are covered. It also establishes a classification based on temperature range and hardness. This document is applicable to materials from which homogeneous seals and homogeneous or reinforced diaphragms are manufactured.
Since the dimensions and shape of the components differ from those of standard test pieces taken from sheet material as used for type testing of the rubber materials according to this document, tolerances have been made in the requirements specified by Annex A for the components with respect to those specified for standard test pieces.
The range of operating temperatures covered by this document is –40 °C to +150 °C.
For applications with potential condensation, this document is not applicable for silicon rubber, e.g. above 200 hPa (200 mbar) nominal pressure or at temperatures below 0 °C with 3rd family gases.
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This document specifies requirements and associated test methods for rubber materials used in gas installations, gas equipment and gas appliances in contact with 1st, 2nd and 3rd family combustible gases as classified in EN 437:2018, additionally LPG, bio methane and bio LPG, in the same quality, are covered. It also establishes a classification based on temperature range and hardness. This document is applicable to materials from which homogeneous seals and homogeneous or reinforced diaphragms are manufactured.
Since the dimensions and shape of the components differ from those of standard test pieces taken from sheet material as used for type testing of the rubber materials according to this document, tolerances have been made in the requirements specified by Annex A for the components with respect to those specified for standard test pieces.
The range of operating temperatures covered by this document is –40 °C to +150 °C.
For applications with potential condensation, this document is not applicable for silicon rubber, e.g. above 200 hPa (200 mbar) nominal pressure or at temperatures below 0 °C with 3rd family gases.
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This document specifies requirements and test methods for unsintered polytetrafluorethylene (PTFE)
tapes and polytetrafluorethylene (PTFE) strings (PTFE tapes or PTFE strings, for short) which are
suitable for sealing threaded metallic joints as specified in EN 10226-1:2004.
This document covers two classes of PTFE tapes and PTFE strings suitable for fine (F) and coarse (G)
threads.
The PTFE tapes and PTFE strings are used as sealing materials for metallic threaded joints in contact with
1st family gases (town gas), 2nd family gases (natural gas) and 3rd family gases (liquefied petroleum gases
(LPG)) up to 500 kPa, up to 700 kPa for hot water of heating systems, and up to 20 kPa in gas appliances
and their auxiliary equipment. The maximum working pressure covered in this document is 2000 kPa
which is relevant to LPG storage. The temperature range is limited to −20 °C to 125 °C.
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- Draft21 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies requirements for materials used for moulded seals made of thermoplastic elastomers (TPEs) for joints in: a) thermoplastic piping systems for non-pressure wastewater discharge (intermittent flow at up to 95 °C) inside buildings; b) 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); c) thermoplastic rainwater piping systems. General requirements for finished joint seals are also given; any additional requirements for a 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.
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This European Standard specifies the design, testing and marking requirements for caps and plugs used to form a pressure tight seal with liquefied petroleum gas (LPG) cylinder valves and pressure vessel valves. Sealing caps and plugs provide an additional seal for self-closing and manually operated valves.
Dust caps and tamper evident seals that do not form an additional seal as part of their design are excluded from the scope of this European Standard.
Cylinder valve caps and plugs may be used with valves for liquid and vapour manufactured in accordance with EN ISO 14245 and EN ISO 15995.
Pressure vessel valve caps and plugs may be used with valves for liquid and vapour manufactured in accordance with EN 13175. Occasional liquid withdrawal valve caps and plugs are excluded from the scope of this European Standard.
Reusable and single use sealing caps and plugs are included in this European Standard.
This European Standard does not exclude the use of other designs that provide an equivalent level of safety.
NOTE The term "pressure vessel" does not include LPG tank vehicles, also called "road tankers", in CEN/TC 286 standards.
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This document specifies a system of classification of materials used in preformed gaskets for buildings. It applies to the following products: a) gaskets for use round the inside of door or window casings, i.e. weatherstripping (dynamic gaskets); b) gaskets for glazing (static gaskets); c) gaskets for use round infilling; d) gaskets for use between facade parts; e) gaskets for use between masonry walls. In addition to specifying the characteristics required for the constituent materials, some functional tests on the gaskets themselves are specified. The corresponding test procedures are given in Annexes A to E. This document applies to preformed gaskets made from vulcanized or thermoplastic rubber. It also applies to preformed gaskets made of cellular rubber designed for use at temperatures between −20 °C and +55 °C (thermal conditions category P1) and between −40 °C and +70 °C (thermal conditions category P3) (see Clause 4).
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EN-IEC 62788-5-1 provides procedures for standardized test methods for evaluating theproperties of materials designed to be used as edge seals. When modules are constructed withimpermeable (or extremely low permeability) front- and backsheets designed to protectmoisture-sensitive photovoltaic (PV) materials, there is still the possibility for moisture to get infrom the sides. This moisture ingress pathway can be restricted by using a low-diffusivitymaterial around the perimeter of a module between the impermeable front- and backsheets.Alternatively, it can be desirable to use a low-diffusivity encapsulant, which may significantlyreduce moisture ingress over the lifetime of the module, and to evaluate it in a similar way toan edge seal material.In addition to restricting moisture ingress, edge seal materials also provide electrical insulation.To perform these functions, edge seal materials are relied upon to adhere well.The test methods described in this document are intended to be used to standardize the wayedge seals are evaluated. Only some of these tests are applied for IEC 61215 and IEC 61730,and that status depends on the specific design. It is not required that all of these tests beperformed, but that if these measurements are made that they be performed as outlined here.
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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.
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This standard specifies requirements and associated test methods for rubber materials used in gas installations, gas equipment and gas appliances in contact with 1st, 2nd and 3rd family combustible gases as classified in EN 437 e.g. natural gas, LPG, bio methane bio LPG. It also establishes a classification based on temperature range and hardness. This standard is applicable to materials from which are manufactured homogeneous seals and homogeneous or reinforced diaphragms.
Since the dimensions and shape of the components differ from those of standard test pieces taken from sheet material as used for type testing of the rubber materials according to this standard, tolerances have been made in the requirements specified by Annex A for the components with respect to those specified for standard test pieces.
The range of operating temperatures covered by this standard is - 40 °C to + 150 °C.
This standard is not applicable for silicone rubber used either above 200 hPa (200 mbar) nominal pressure or at temperatures below 0 °C with 3rd family gases, as there is the possibility of condensation.
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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.
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ISO 3601-2:2016 specifies the housing (gland) dimensions for class A O-rings for general industrial applications conforming to ISO 3601-1, as well as housing dimensions for class B O-rings used on selected metric-dimensioned hardware, e.g. fluid power cylinder bores and piston rods. These O-rings are for use in general hydraulic and pneumatic applications without and with anti-extrusion rings (back-up rings). The dimensions of the O-rings (d1 and d2), size codes (SC) and tolerances conform to ISO 3601-1. Housing dimensions for the O-rings intended for aerospace applications that are specified in ISO 3601-1 are addressed in Annex A.
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ISO 3601-5:2015 contains the material specification of a selection of standard elastomeric materials (rubber) for O-rings used in general industrial applications. It also indicates the ability of the materials to satisfy many of the requirements associated with fluid power components. Only materials which are in universal usage are specified; other compounds are available and can be used. The required physical properties and test methods (including test specimen) should be agreed upon between equipment manufacturer/user and O-ring manufacturer/supplier.
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This European Standard specifies the material requirements and test methods for prefabricated elastomeric seals for use in flue liners. It also specifies the requirements for evaluation of conformity.
These seals are components in flue liners of different materials such as metal, plastic, clay, concrete.
Performance requirements of elastomeric seals in flue liners are covered by the relevant product standards.
In the product standards, chimney products, including seals, are tested under operational conditions (e.g. temperature, pressure, mechanical load, flue gas, condensate) to relevant properties such as leakage and deformation.
This European Standard covers seals intended for use in both dry and wet conditions. Therefore all seals are tested for functioning under wet conditions.
This European Standard does not contain all the requirements necessary for chimneys with the following classification:
- corrosion resistance class 2 concerning natural wood ),
- corrosion resistance class 3.
This European Standard is also applicable for sealants, in case nothing else is defined. The specimens are made from the sealants, which have been brought into a practical form, cured under manufacturers' instructions. The cured sealants will fulfil the same requirements as seals.
NOTE Cured sealants are operationally seals in application.
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ISO 5892:2013 specifies material requirements for preformed, solid vulcanized rubber structural gaskets in sealing and supporting applications for buildings.
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ISO 3601-1:2012 specifies the inside diameters, cross-sections, tolerances and designation codes for O-rings used in fluid power systems for general industrial and aerospace applications. The dimensions and tolerances specified in ISO 3601-1:2012 are suitable for any elastomeric material, provided that suitable tooling is available.
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ISO 16589-2:2011 establishes the vocabulary for seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE) that are considered suitable for use under low-pressure conditions.
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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-3:2011 gives users of lip-type seals guidance on the careful storage and handling and proper installation of rotary shaft lip-type seals; attention is drawn to the hazards involved and ways of avoiding them are pointed out.
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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-1:2011 shows seal types and examples. It also specifies the nominal dimensions and tolerance of the seals, shafts and housings, as well as a dimensional identification code.
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- Standard18 pagesEnglish languagesale 10% offe-Library read for1 day
ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-5:2011 defines and classifies typical surface imperfections that could impair the function of the seals, and is intended as a convenience for purchasers and manufacturers in their discussions concerning the importance of these imperfections in different applications.
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ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-4:2011 specifies general performance tests which can be used for seal qualification purposes. Materials quality control, dynamic testing, and supplementary low-temperature testing requirements are covered.
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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.
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ISO 6194-3:2009 describes seals utilizing elastomeric sealing elements. They are considered suitable for use under low-pressure condition. ISO 6194-3:2009 gives users of lip-type seals requirements and guidance on the careful storage, handling and proper installation of rotary shaft lip-type seals; attention is drawn to the hazards involved and ways of avoiding them.
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ISO 6194-2:2009 establishes the appropriate vocabulary for seals utilizing elastomeric sealing elements where the terms and definitions given in ISO 5598 apply. These seals are considered suitable for use under low-pressure conditions.
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ISO 6194 describes seals utilizing elastomeric sealing elements. They are considered suitable for use under low-pressure conditions. ISO 6194-4:2009 specifies general test requirements for rotary-shaft lip-type seals. The tests may be used for qualification purposes.
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ISO 27996:2009 is applicable to the general requirements for data recording procedures, packaging, and storing of elastomeric seals and seal assemblies which include an elastomeric element prior to the seal being assembled into hardware components. The requirements for packaging are an integral part of the controlled storage procedure and provide a means of positive product identity from the time of manufacture to the time of assembly into a component. ISO 27996:2009 does not establish limitations or storage times for assembled components nor the operating life of these components. The information contained in ISO 27996:2009 is intended for use by those organizations that do not have specific requirements or recommendations already in place for the control of elastomeric seals and seal assemblies. ISO 27996:2009 can be specified in control, storage and procurement documents. However, when the requirements of ISO 27996:2009 are in conflict with the customer's requirements or specifications, the requirements of the customer's detailed specifications take precedence.
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ISO 3601-4:2008 specifies dimensions and tolerances for five types of anti-extrusion rings, which are also known as back-up rings: spiral type (T1); angle cut type (T2); solid type (T3); angle cut concave type (T4); solid concave type (T5). These anti-extrusion rings are for use with selected O-ring sizes as specified in ISO 3601-1 and the relevant housing dimensions specified in ISO 3601-2.
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ISO 6194-5:2008 describes seals utilizing elastomeric sealing elements. They are normally considered suitable for use only at low pressures (see ISO 6194-1:2007, 6.1). ISO 6194-5:2008 defines and classifies typical surface imperfections that can impair the function of the seals and is intended as a convenience for purchasers and manufacturers in their discussions concerning the importance of these imperfections in different applications.
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ISO 6194-1:2007 describes seals utilising elastomeric sealing elements. They are considered suitable for use under low-pressure conditions. ISO 6194-1:2007 shows seal types and examples. It also specifies the nominal dimensions and tolerances of the seals, shafts and housings, as well as a dimensional identification code.
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ISO 6119:2006 specifies the performance test methods and requirements for elastomeric seals used in road vehicle disc brake cylinders. It is applicable to solid section type seals (square, rectangular, O-ring), mounted stationary in the cylinder bore or on the movable piston of disc brakes.
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ISO 6118:2006 specifies performance tests of brake cups and seals for hydraulic braking systems for road vehicles. It does not include requirements relating to chemical composition, tensile strength and elongation of the rubber compound. Disc brake seals are not covered by this International Standard. ISO 6118:2006 is applicable to moulded seals (cups or double-lipped type gland seals), 60 mm in diameter and smaller, compounded from rubber, for use in hydraulic actuating cylinders employing road vehicle non-petroleum base hydraulic brake fluid conforming to the requirements of ISO 4925.
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ISO 4928:2006 specifies performance tests of brake cups and seals for hydraulic braking systems for road vehicles; it does not include requirements relating to chemical composition, tensile strength and elongation of the rubber compound. Disc brake seals are not covered by this International Standard. ISO 4928:2006 is applicable to moulded seals (cups or double-lipped type gland seals), 60 mm in diameter and smaller, compounded from high temperature-resistant rubber, for use in hydraulic actuating cylinders using road vehicle non-petroleum base hydraulic brake fluid conforming to the requirements of ISO 4925.
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ISO 4930:2006 specifies the performance test methods and requirements for elastomeric seals used in road vehicle disc brake cylinders. It is applicable to solid section type seals (square, rectangular, O-ring), mounted stationary in the cylinder bore or on the movable piston of disc brakes.
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2020-01-20: Originator of XML version: NEN (on behalf of NEN, ASI, DS, SFS, SIS, SN)
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2020-01-20: Originator of XML version: NEN (on behalf of NEN, ASI, DS, SFS, SIS, SN)
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ISO 3601-3:2005 lays down the quality acceptance criteria of O-rings used in fluid systems, the dimensions of which are standardized in ISO 3601-1, ISO 16031-1 and ISO 16031-2. ISO 3601-3:20051 also defines and classifies surface imperfections on O-rings and specifies maximum acceptable limits for these imperfections. ISO 3601-3:2005 is also applicable to O-rings to be used in aerospace construction.
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ISO 6117:2005 specifies performance tests for moulded rubber boots used at end closures on drum type wheel brake cylinders; these boots prevent the entrance of dirt and moisture which could cause corrosion and otherwise impair wheel brake operation. It is applicable to boots of both plain and reinforcement insert types, for fitting in wheel cylinders using a fluid in accordance with ISO 4925. It does not include requirements relating to chemical composition, tensile strength or elongation at brake of the rubber compound; it dose not cover the strength of adhesion of rubber to the reinforcement in the insert type. The rubber material used in these boots is suitable for operation in a temperature range of -40 °C to +100 °C.
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ISO 4927:2005 specifies performance tests for moulded rubber boots used at end closures on drum type wheel brake cylinders. These boots prevent the entrance of dirt and moisture which could cause corrosion and otherwise impair wheel brake operation. ISO 4927:2005 is applicable to boots of both plain and reinforcement insert types, for fitting in wheel cylinders using a fluid in accordance with ISO 4925. It does not include requirements relating to chemical composition, tensile strength or elongation at brake of the rubber compound; it does not cover the strength of adhesion of rubber to the reinforcement in the insert type. The rubber material used in these boots shall be suitable for operation in a temperature range of -40 °C to +120 °C.
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ISO 21049:2004 specifies requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas and chemical industries. It is applicable mainly for hazardous, flammable and/or toxic services where a greater degree of reliability is required for the improvement of equipment availability and the reduction of both emissions to the atmosphere and life-cycle sealing costs. It covers seals for pump shaft diameters from 20 mm (0,75 in) to 110 mm (4,3 in). ISO 21049:2004 is also applicable to seal spare parts and can be referred to for the upgrading of existing equipment. A classification system for the seal configurations covered by ISO 21049:2004 into categories, types, arrangements and orientations is provided.
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This European Standard 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:
General applications (see Table 4, type G)
a) gaseous fuel (manufactured, natural and liquefied petroleum gas [LPG] in gaseous phase);
b) hydrocarbon fluids with aromatic content up to 30 % (V/V), including LPG in liquid phase.
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 European Standard should be used where appropriate with product standards which specify performance requirements for joints.
This European Standard is applicable to joint seals for all pipeline materials including iron, steel, copper and plastics.
In the case of composite seals requirements in 4.2.8 and 4.2.9 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 categories 80 and 90 apply only when they constitute that part of the seal which participates directly in the sealing function or in long term stability.
This standard is not applicable to the following:
a) seals made from cellular materials;
b) seals with enclosed voids as part of their design;
c) seals with requirements of resistance to flame or to thermal stress;
d) seals which contain splices joining pre-vulcanised profile ends.
- Standard18 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard 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:
General applications (see Table 4, type G)
a) gaseous fuel (manufactured, natural and liquefied petroleum gas [LPG] in gaseous phase);
b) hydrocarbon fluids with aromatic content up to 30 % (V/V), including LPG in liquid phase.
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 European Standard should be used where appropriate with product standards which specify performance requirements for joints.
This European Standard is applicable to joint seals for all pipeline materials including iron, steel, copper and plastics.
In the case of composite seals requirements in 4.2.8 and 4.2.9 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 categories 80 and 90 apply only when they constitute that part of the seal which participates directly in the sealing function or in long term stability.
This standard is not applicable to the following:
a) seals made from cellular materials;
b) seals with enclosed voids as part of their design;
c) seals with requirements of resistance to flame or to thermal stress;
d) seals which contain splices joining pre-vulcanised profile ends.
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This European Standard specifies requirements and test methods for non-hardening sealing materials (hereafter referred to as jointing compounds) suitable for sealing threaded metallic joints such as those specified in ISO 7-1. These jointing compounds are for use in contact with 1st family gases (town gas), 2nd family gases (natural gas) and 3rd family gases (liquefied petroleum gases (LPG) not including LPG in the liquid form) and hot water of heating systems (Class A), in gas appliances and their auxiliary equipment (Class B) as well as in LPG storage (Class C) according to table 1. Anaerobic jointing compounds are covered by EN 751-1, non-hardening sealing materials in the form of PTFE-tapes are covered by EN 751-3.
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This European Standard specifies requirements and test methods for anaerobic jointing compounds (hereafter referred to as "jointing compounds") suitable for sealing threaded metallic joints such as those specified in ISO 7-1. These jointing compounds are for use in contact with 1st family gases (town gas), 2nd family gases (natural gas) and 3rd family gases (liquefied petroleum gases (LPG) not including LPG in the liquid form) and hot water of heating systems. [The scope of the complete standard includes a table.]
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This International Standard defines the test conditions and methods for assessing the performance of seals used in oil hydraulic reciprocating applications. The resulting specified characteristics may be published in manufacturer's literature to enable a direct comparison of seal performance. The seal under test may be a single seal or a combination seal package.
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Specifies performance tests for moulded rubber boots used as end closures on drum type brake cylinders. These boots prevent the entrance of dirt and moisture which could cause corrosion and otherwise impair wheel brake operation. Applies to boots of both plain and reinforcement insert types. Requirements relating to chemical composition, tensile strength or elongation at break of the rubber compound are not included.
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