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 Europe’s largest O-Ring stock (more than 45,000 items from 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.


Merry Christmas!

Our best wishes go out to you and your family for a wonderful holiday season and a new year filled with luck and prosperity.

With seasonal greetings,

Your COG Team



Dear customer and business partner,

Our office will be working with a skeleton staff between Christmas and the New Year. On December the 22nd and 23rd as well as on December the 29th and 30th we will be available from 9 a.m. to 3 p.m.

Our office will be closed from December the 24th to December 26th and from December 31st to January 2nd, 2015. You can reach our complete team again on January the 5th, 2015.

Yours team of COG


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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