One of the central demands from the valve sector and gas industry has been for a seal material that has suitable low temperature flexibility, and which conforms to the DIN EN 14141 standard. The independent seal manufacturer C. Otto Gehrckens has developed a special FKM compound which fulfils the requirements of the valve and gas industry.
The low temperature flexible ‘Vi 840’ FKM compound has been successfully tested according to DVGW DIN EN 682 (type GBL). With a low temperature flexibility of more than -40°C it therefore fulfils the requirements of DIN EN 14141.
With a TR-10 value of -40.1°C, this high-tech compound is suitable for use at temperatures down to -46°C, and therefore fulfils the important API 6A and 6D standards. Furthermore, its resistance has been demonstrated and proven according to the DIN EN 13787 standard. According to the manufacturer, this combination of properties for an FKM seal material is hitherto unique in the market, and therefore represents an enormous advance in seal technology for the valves sector and gas industry.
