Sealing expertise in three letters: COG

As an independent manufacturer, we are one of Germany’s leading suppliers of precision seals. We advise, develop and manufacture for you – always with the aim of providing you with a satisfying solution to your requirements, as well as assisting you with the smooth running of your processes. In order to avoid production downtime caused by damage to seals or by leakages, we make our high degree of materials expertise available to you. Like this, it quickly pays off for you to rely on the specialists.

In the world’s largest O-ring warehouse, we have over 45,000 different items in stock for you, including not just standard sizes but also special size variants, made from a wide variety of materials. You can directly make your choice and place your order. Or ask the specialists in our application technology department for expert advice: Our high-tech products provide you with clear benefits.

COG. For 150 years the right solution.

COG 150 years logo

Our starting point is always a wide range of elastomers with outstanding performance characteristics. Our objective is to provide solutions you can depend upon. This results in lower expenditure on maintenance and lower follow-up costs.

But the most important requirement is the close partnership with you: Are you searching for dependable quality at a fair price? Do you require a custom solution suitable for your sector, which will enable you to secure your market advantage? Let’s discuss your requirements!  

Our next O-Ring-Akademie® webinar - quick, compact and qualified informed in one hour.

"A major challenge: Designing and sealing with O-rings.
Using the example of a piston seal ."

June 26th, 2018 from 10:30h to 11:30h 

Free of charge

For further information and for registration, read here.


Trade shows 2018

COG will be exhibiting at the following national and international trade shows this year.


We are looking forward to your visit!

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