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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, 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 specifi c requirements of the chemical industry. For more than 100 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.