German EngineeRING

German Engineering certainly enjoys a superb reputation
worldwide, mainly for its acknowleged reliability. In all
modesty, this is very likely due to our precision O-Rings and elastomer seals, too.
As an independent manufacturer we belong to one of the leading supplier of precision O-Rings. COG delivers from the world’s largest O-Ring warehouse (more than 45,000 items in stock) most various materials, including FFKM/FFPM. Besides, our developers are always happy to meet any specific requirements of the chemical industry. For more than 140 years, COG has taken care that “German Engineering” is a story with a happy ending.

Our clients define the aims of everything we do. New ideas and products are developed quickly and in a market- and goal-oriented manner for the benefit to our clients. Let‘s discuss your aims.



We are looking forward to seeing you at the PTC Asia trade show in Shanghai, P.R. China.




COG wins the Innovation Award at the ACHEMA 2015

The new COG high performance sealing material "Vi 840" won the Innovation Award in the category "Valves, Seals and Fittings". COG celebrated winning this award from the specialist trade publications PROCESS, PROCESS Worldwide, PharmaTEC and LABORPRAXIS at the ACHEMA trade show in Frankfurt Main (Germany).

The FKM compound Vi 840 holds the most important certifications for use in the valves sector and gas industry. Due to its low temperature flexibility of more than -40 °C the compound fulfils the API 6A and 6D standard.

For further information about the new FKM compond "Vi 840" please click here.



Article "Elastomer Sealing Systems - Best Practise" about COG

The renowned trade magazine "Process worldwide" has published a professional article about COG and our products. You will find this article here:

Elastomer Sealing Systems: Best Practices: Elastomer Sealing Systems for Ultra-Pure Water, CIP and SIP


Dear editorial staff of Process worldwide,

thank you very much for this publication! The complete COG team is proud of it!

New: Corporate video

COG has created a corporate video. Please have a look and enjoy the film: COG Impressions





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