COG is presenting two high-performance materials for hydrogen applications – a blue FKM and a blue EPDM. The FKM material Vi 208 with a hardness of 80 Shore A performed convincingly in the test with a very good hydrogen permeation coefficient of only 281 Ncm3mm m-2day-1bar-1 on average. This is far above what can normally be expected from FKM compounds. A high chemical resistance and a broad operating temperature range from –10 to +200 °C round off the material profile of Vi 208.
The new EPDM development AP 208 also performed very convincingly in the H2 permeation test for an EPDM (hydrogen permeation coefficient: 1317 Ncm3mm m-2day-1bar-1 ) and, with a compression set of 15 % and a possible operating temperature of up to 45 °C, offers a wide range of applications in the various sectors. With the two H2Seal compounds, COG provides developers and users of hydrogen technologies with two versatile specialty materials for challenging sealing solutions in this demanding application environment.
C. Otto Gehrckens GmbH & Co. KG, Pinneberg, Germany