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  • BSI
    BS EN 549:2019 Rubber materials for seals and diaphragms for gas appliances and gas equipment
    Edition: 2019
    $418.55
    / user per year

Description of BS EN 549:2019 2019

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.

Standard NumberBS EN 549:2019
TitleRubber materials for seals and diaphragms for gas appliances and gas equipment
StatusUnder Review
Publication Date2019-07-18
ReplacesBS EN 549:1995
Identical National Standard OfEN 549
DescriptorsQuality control, Verification, Mechanical tests, 3rd family gases, 2nd family gases, 1st family gases, Grades (quality), Spectrophotometry, Infrared radiation, Test specimens, Testing conditions, Ozone, Lubricants, Chemical-resistance tests, Gas-resistance tests, Compression set, Elongation at fracture, Tensile strength, Temperature, Ageing (materials), Hardness, Seals, Diaphragms (mechanical components), Synthetic rubber, Natural rubber, Mechanical components, Gas-powered devices
ICS83.140.50 Seals
CommitteePRI/70
ISBN978 0 580 91353 2
PublisherBSI
Pages34

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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