cog

COG’s new high performance material Vi 250 seals air at temperatures of up to 250 °C, even over the long term. Furthermore, the all-round compound also impresses thanks to its excellent media resistance, and is also resistant to chemicals such as for example all types of hydrocarbons. FKM possesses extraordinarily good resistance to numerous specific […]

At the start of the Hannover Messe trade fair, seal expert C. Otto Gehrckens made its O-ring calculator available on the company’s website. The tool is especially aimed at engineers who want to quickly and easily check their designs, or determine the correct parameters for selecting O-rings. The O-ring pros at COG made their primary […]

Sealing compounds used in the applications above often create a barrier against gaseous media if highly pressurized gas falls to a very low-pressure level within a very short period of time. The result of this process is often a damage of the sealing. The elastomer material is either torn in various places or blistering on […]

The EPDM high-performance material for the medical technology, pharmaceutical industry and biotechnology The special material in the COG HygienicSeal series has been granted the most important approvals for application in these highly demanding industries. As well as the harmlessness test according to FDA 21. CFR 177.2600, AP 306 is approved according to USP class VI […]

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. Up until now, there simply hasn’t been a suitable FKM seal material available. But now, the independent seal manufacturer COG has developed a […]