C. Otto Gehrckens GmbH & Co. KG

About us
As an independent manufacturer, COG is one of the leading suppliers of precision O-rings and elastomer seals. More than 250 employees at COG are committed to the success of their customers, from engineers in application technology to their fast colleagues in Europe’s largest O-ring bearing.

– Founded in 1867 in Pinneberg near Hamburg
– Owner led, in the fifth generation
– Independent family business with over 200 employees
– Europe’s largest O-ring bearing (over 45,000 items available from stock)
– Tools for approx. 15,000 different O-ring dimensions available
– Own mixing and mixture development
– Close cooperation with leading raw material suppliers
– Different materials, eg. B. FKM, FFKM, EPDM, NBR, VMQ (silicone), HNBR, PTFE, FEP sheathed, FEPM, u. v. m.
– Approvals and approvals for various materials available
– Own toolmaking
– Optimized delivery service through new logistics center in 2002
– Quality management according to DIN EN ISO 9001: 2000
– Environmental management according to DIN EN ISO 14001: 2005