DIN Standards Committee Gas Technology
Rubber materials for seals and diaphragms for gas appliances and gas equipment
Abstract
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. The following modifications have been implemented compared to DIN EN 549:2023-07 a) Adaptation of Annex ZA to mandate M/595
Begin
2024-03-21
WI
00208036
Planned document number
DIN EN 549
Project number
03201056
Responsible national committee
NA 032-03-02 AA - Components and auxiliary supplies - Gas
Responsible european committee
CEN/TC 208/WG 4 - Seals and diaphragms for gas appliances and gas equipment.
