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.

Cross References:
EN ISO 1183-1:2019
ISO 815-1:2014
ISO 1817:2015
ISO 1407:2011
ISO 23529:2016
ISO 1431-1:2012
ISO 4650:2012
ISO 815-2:2014
ISO 188:2011
ISO 48-2:2018
ISO 37:2017
EN ISO 2578:1998
ISO 2781:2008+A1:2010
EN ISO 13760
EN 437:2018
ISO 11346:2014


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