EN 549:2019+A1:2023

Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 549:2019+A1:2023

Publication date:   Oct 16, 2023

General information

60.60 Standard published   May 3, 2023


CEN/TC 208 Elastomeric seals for joints in pipework and pipelines

European Norm

23.040.80   Seals for pipe and hose assemblies | 83.140.50   Seals



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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.

Related legislation

Legislation related to this standard


REGULATION (EU) 2016/426 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 March 2016 on appliances burning gaseous fuels and repealing Directive 2009/142/EC


Life cycle


EN 549:2019+A1:2023
60.60 Standard published
May 3, 2023


EN 549:2019+A1:2023/prA2