About COG
Premium quality since 1867.
COG stands for uncompromising quality. Our customers are among the best in their industries — and expect the best from us too. We have been committed to this for over 150 years, now led in the fifth generation by the owning Metzger family.
Figures, facts, advantages
COG at a glance.
- Large O-ring warehouse: over 45,000 items available ex stock
- Tooling for approx. 22,000 different O-ring dimensions
- In-house compounding and compound development
- In-house tool making
- Close cooperation with leading raw material suppliers
- All essential materials of elastomer sealing technology (including FKM, FFKM, FEPM, NBR, VMQ) as well as special materials (PTFE, FEP, TPU, FEP-encapsulated)
- Approvals and certifications available for various materials
- Quality management in accordance with DIN EN ISO 9001:2015
- Environmental management in accordance with DIN EN ISO 14001:2015
Company history
15 decades of COG — explored interactively.
Select a year to display the corresponding milestone in the company's history.
Founded as the leather factory G. Metzger & Sohn in Pinneberg.
Acquisition of the company C. Otto Gehrckens, continued under this name.
Switch from leather to rubber processing — V-belts and elastomer seals.
Certification in accordance with DIN EN ISO 9001.
Certification in accordance with DIN EN ISO 14001.
Move into the new logistics centre with state-of-the-art warehouse technology.
Introduction of express manufacturing and opening of the O-Ring Academy.
Anniversary: 150 years of COG.
Completion of the technical centre.
Recognition of our climate protection commitment with the PRIMAKLIMA seal.
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