EN 549:2019+A2:2024
(Main)Rubber materials for seals and diaphragms for gas appliances and gas equipment
Rubber materials for seals and diaphragms for gas appliances and gas equipment
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.
Elastomer-Werkstoffe für Dichtungen und Membranen in Gasgeräten und Gasanlagen
Dieses Dokument legt Anforderungen und zugehörige Prüfverfahren für Elastomer-Werkstoffe fest, die in Gasgeräten und Gasanlagen in Kontakt mit Brenngasen der 1., 2. und 3. Gasfamilie, wie in EN 437:2018 klassifiziert, eingesetzt werden. Zusätzlich werden Flüssiggas, Bio-Erdgas und Bio-Flüssiggas in gleicher Qualität abgedeckt. Dieses Dokument stellt außerdem eine Klassifizierung nach Temperaturbereich und Härte auf. Es ist anwendbar für Werkstoffe, aus denen homogene Dichtungen und homogene oder verstärkte Membranen hergestellt werden.
Da die Abmessungen und die Form der Fertigteile von denen genormter Probekörper, hergestellt aus Plattenmaterial, wie sie zur Typprüfung von Elastomer-Werkstoffen nach diesem Dokument verwendet werden, abweichen, wurden Toleranzen hinsichtlich der für Fertigteile in Anhang A festgelegten Anforderungen gegenüber den für Normprobekörper festgelegten Anforderungen eingeräumt.
Der Bereich der Betriebstemperaturen, der von diesem Dokument abgedeckt wird, reicht von − 40 °C bis + 150 °C.
Bei Anwendungen mit möglicher Kondensation ist dieses Dokument nicht anwendbar für Silikongummi, z. B. über 200 hPa (200 mbar) Nenndruck oder bei Temperaturen unter 0 °C mit Gasen der 3. Gasfamilie.
Matériaux à base de caoutchouc pour joints d'étanchéité et membranes destinés aux appareils à gaz et matériels pour le gaz
Gumeni materiali za tesnila in membrane v plinskih aparatih in plinskih napravah (vključno z dopolnilom A2)
Ta dokument določa zahteve in z njimi povezane preskusne metode za gumene materiale, ki se uporabljajo v plinskih napeljavah, plinskih napravah in plinskih aparatih v stiku z vnetljivimi plini iz 1., 2. in 3. družine, razvrščenimi v skladu s standardom EN 437:2018, pri čemer zajema tudi utekočinjeni naftni plin (LPG), biometan in utekočinjeni naftni plin biološkega izvora enake kakovosti. Vzpostavlja tudi razvrstitev glede na temperaturno območje delovanja in trdoto. Ta dokument se uporablja za materiale, iz katerih so izdelana homogena tesnila in homogene ali ojačane membrane.
Ker se mere in oblika komponent razlikujejo od standardnih preskušancev iz plastnega materiala, ki se uporabljajo za tipsko preskušanje gumenih materialov v skladu s tem dokumentom, so bila v zahtevah, določenih v dodatku A, določena dovoljena odstopanja za komponente glede na tiste, ki veljajo za standardne preskušance.
Ta dokument zajema temperaturno območje delovanja od –40 °C do +150 °C.
Za načine uporabe, pri katerih je lahko prisotna kondenzacija, se ta dokument ne uporablja za silikonsko gumo, npr. pri nazivnem tlaku nad 200 hPa (200 mbar) ali temperaturi pod 0 °C s plini iz 3. družine.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2024
Nadomešča:
SIST EN 549:2019+A1:2023
Gumeni materiali za tesnila in membrane v plinskih aparatih in plinskih napravah
(vključno z dopolnilom A2)
Rubber materials for seals and diaphragms for gas appliances and gas equipment
Elastomer-Werkstoffe für Dichtungen und Membranen in Gasgeräten und Gasanlagen
Matériaux à base de caoutchouc pour joints d'étanchéité et membranes destinés aux
appareils à gaz et matériels pour le gaz
Ta slovenski standard je istoveten z: EN 549:2019+A2:2024
ICS:
83.140.50 Tesnila Seals
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 549:2019+A2
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2024
EUROPÄISCHE NORM
ICS 23.040.80; 83.140.50 Supersedes EN 549:2019+A1:2023
English Version
Rubber materials for seals and diaphragms for gas
appliances and gas equipment
Matériaux à base de caoutchouc pour joints Elastomer-Werkstoffe für Dichtungen und Membranen
d'étanchéité et membranes destinés aux appareils à in Gasgeräten und Gasanlagen
gaz et matériels pour le gaz
This European Standard was approved by CEN on 23 February 2023 and includes Amendment 2 approved by CEN on 21
February 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 549:2019+A2:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Product's information . 7
5 Classification . 8
6 Requirements . 9
6.1 General . 9
6.2 Requirements for rubber material used to manufacture seals . 9
6.3 Requirements for rubber material used to manufacture diaphragms . 11
7 Test methods . 13
7.1 General . 13
7.2 Hardness . 13
7.3 Tensile strength and elongation at break . 13
7.4 Compression set . 13
7.5 Resistance to ageing . 13
7.6 Resistance to gas . 13
7.7 Resistance to condensate/liquid phase of combustible gases . 14
7.8 Resistance to lubricants . 14
7.9 Resistance to ozone . 14
7.10 Stress relaxation in compression . 17
7.11 Resistance to gas — Change of volume . 17
7.12 Resistance to condensate/liquid phase of combustible gases — Change of volume . 17
8 Evaluation of life-time for material used to manufacture seals . 17
9 Infrared spectra of the material . 17
Annex A (normative) Requirements and test of components . 18
A.1 Scope . 18
A.2 Requirements . 18
A.2.1 General . 18
A.2.2 Physical and chemical properties of seals . 18
A.2.3 Physical and chemical properties of diaphragms . 18
A.3 Tests methods for components . 18
A.3.1 General . 18
A.3.2 Hardness . 18
A.3.3 Resistance to ageing . 19
A.3.4 Resistance to gas . 19
A.3.5 Resistance to condensate/liquid phase of combustible gas. 19
A.3.6 Resistance to lubricants . 19
A.3.7 Resistance to ozone . 20
Annex B (normative) Infrared spectra of the material . 24
B.1 Scope . 24
B.2 Requirements . 24
B.2.1 General . 24
B.2.2 Solvent extract . 24
B.2.3 Infrared spectra . 24
B.2.4 Density . 24
B.3 Methods of test . 24
B.3.1 General . 24
B.3.2 Solvent extraction . 24
B.3.3 Infrared spectra . 25
B.3.4 Density . 25
Annex C (normative) Evaluation of lifetime for material used to manufacture seals by using
the compression set method . 26
C.1 General . 26
C.2 Requirements . 27
C.3 Test Procedure . 27
C.4 Evaluation of Test Results . 28
C.5 Documentation . 29
Annex D (informative) Verification of identity of material . 30
D.1 Scope . 30
D.2 Verification requirements . 30
D.2.1 General . 30
D.2.2 Solvent extract . 30
D.2.3 Infrared spectra . 30
D.2.4 Density . 30
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation 2016/426 aimed to be covered . 31
Bibliography . 32
European foreword
This document (EN 549:2019+A2:2024) has been prepared by Technical Committee CEN/TC 208
“Elastomeric seals for joints in pipework and pipelines”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2024, and conflicting national standards shall
be withdrawn at the latest by October 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1 approved by CEN on 23 February 2023.
This document includes Amendment 2 approved by CEN on 21 February 2024.
This document supersedes #EN 549:2019+A1:2023$.
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