GAS
Compliance with DIN EN 549 for versatile applications
Our certified NBR-based compounds meet the standard temperature classes B1 and B2 as well as the significant hardness ranges H2 and H3 of DIN EN 549. We also offer certification for the critical 70 Shore A hardness range required for gas appliances. With the exception of the 45 Shore A variant, our materials are certified for both seal and diaphragm applications.
DIN EN 682 certification for type GA and GBL
Our NBR-based compounds, certified according to EN 682, are well sorted in the hardness range from 60 to 93 Shore and, with the exception of the 93 Shore material, are available for the demanding GBL type.
Suitable for use in hydrogen applications according to ZP 5101
Hydrogen, a key component of the energy transition, represents cleanliness, efficiency and environmental compatibility. Due to its properties, safe handling of hydrogen requires the highest safety measures. Therefore, the DVGW has developed the new certification program ZP 5101 for materials in contact with hydrogen. Our proven compounds, already certified according to EN 682 and EN 549, have been submitted to DVGW for testing in the most important hardness range. The type approval certificates for PP7BDZ (according to EN 682) and PP7GAZ (according to EN 549) have already been updated to include the hydrogen permeability test note.
Properties
Recipes specifically developed to meet gas industry requirements
Certified according to recognized standards such as DIN EN 549 and DIN EN 682
- ZP 5101 certified for contact with hydrogen
Suitable for use as seals and diaphragms
Reliable performance in gas appliances and related applications
The DVGW (Deutscher Verein des Gas- und Wasserfaches) is the German Technical and Scientific Association for Gas and Water. It is a technical and scientific organization that sets regulations, conducts research and develops standards in the gas and water industry in Germany. The association establishes standards for safety, quality and environmental protection in gas and water supply and develops technical regulations and certification programs.
EN 549 specifies the requirements for materials used in the manufacture of seals and diaphragms for gas appliances and installations, such as gas meters. The standard mandates testing on standardized test specimens made from sheets of the respective material.
EN 682 specifies the requirements for materials used in seals for supply pipes and components at operating temperatures from -5 °C (in special cases -15 °C) to +50 °C.
The German Technical and Scientific Association for Gas and Water (DVGW) has taken an important step in ensuring material compatibility with hydrogen with the ZP 5101 certification program. As part of this program, the permeability of hydrogen through various materials is tested using appropriate test methods. The tests reveal significant differences between different elastomers.
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