Sealing for Heavy Duty

Corteco’s heavy‑duty oil seals combine long-lasting durability with the precision engineering of Freudenberg Sealing Technologies—the original inventor of the Simmerring®. Designed for demanding operating conditions, our seals reliably withstand high pressures, extreme temperatures, continuous load cycles, and harsh environmental influences common in heavy‑duty machinery.

Manufactured to strict OE standards, each seal delivers consistent performance and long service life. Advanced materials and proven production processes ensure dependable sealing and effective protection of critical components, helping maintain equipment efficiency and reduce unplanned downtime.

As Freudenberg’s aftermarket brand, Corteco provides a broad portfolio of OE‑quality sealing solutions tailored for heavy‑duty environments. The Simmerring® legacy, built on decades of innovation, continues to define our commitment to precision, reliability, and engineering excellence.

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Radial Shaft Seals – The Simmerring®

A radial shaft seal is a crucial component in an engine, designed to prevent the leakage of fluids and contaminants along the rotating shafts of crank- and camshafts.

Gaskets & Gasket Kits

Discover Corteco’s premium Cylinder Head Gaskets, kits and Head Bolts, essential for professional engine maintenance.

Valve Stem Seals

Valve stem seals are essential engine components that prevent oil leakage into cylinders, ensuring efficient combustion and reducing emissions.

Oil Drain Plugs and Washers

It is more than just a bolt; it is the key to ensuring the smooth flow of clean oil and the effective removal of the old, potentially contaminated oil.​

Sealing Paste

Our selection of sealing pastes ensuring optimal performance for general servicing and maintenance.

Gasket Materials

Corteco Gasket Materials offer the perfect solution for any sealing task you encounter.