German based manufacturer C. Otto Gehrckens (COG) has announced a special new compound for seal manufacture, which it claims could present a breakthrough for the valve and gas industry.
“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,” COG writes in a statement. “Up until now, there simply hasn’t been a suitable FKM seal material available. But now, the independent seal manufacturer COG has developed a special FKM compound which fulfils the requirements of the valve and gas industry.”
The new FKM compound has been successfully tested according to DVGW DIN 682 (type GBL). In addition, the material has low temperature flexibility to under -40°C, allowing it to meet the DIN EN 14141 standard.
With a TR-10 value of -40.1°C, the compound is suitable for use at temperatures as low as -46°C, fulfilling API 6A and 6D standards. The compound’s resistance has also been demonstrated and proven to the DIN EN 13787 standard.
COG claims that this combination of properties is unprecedented in an FKM seal, representing a major advance in seal technology for valves and the gas industry.