Sealing

Material expertise is the basis for every sealing system.

Our sealing elements protect against environmental influences, are characterized by high resistance to media such as air, water and oil and can be used throughout the vehicle.

Our NVHS seals are also used in our 'Thermal Management' technology field, where they are exposed to extreme situations. Here, the focus is on controlling cold and heat energy, which is also a basic requirement for driving comfort, performance and range in BEVs.

With NVHS material expertise, Woco achieves zero leakage here! You can find more information on this in our Thermal Management segment.

To Thermal Management

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Grommets 

Seals can be found in almost all areas of the vehicle. They are essential for restricting or completely preventing the passage of various media such as water or oil to certain areas.

Our seals on wiring systems, bellows, drive housings or car bodies do just that!

Depending on the requirements, we are able to use a wide variety of materials. Our broad database of rubber formulations helps us to do this, but we also use 2k or 3k solutions with plastic and / or silicone for specific applications.

With our many years of expertise - our Woco DNA - in material development, design and simulation, we are able to offer a suitable solution for every vehicle application. We focus primarily on weight reduction and the use of sustainable materials.

Electronic Housing, Gaiter, battery housing seal, bulkhead grommets

Plug & Seal

Plug & Seal is Woco’s patented, integrated connector solution for water‑glycol coolant interfaces in the thermal management of high‑voltage batteries in battery electric vehicles (BEVs). Designed as a compact, single‑piece component, it combines sealing, retention and tolerance compensation in one assembly‑ready solution.

The system is engineered for blind and fully automated installation on tube spigots and housings—without clamps, auxiliary parts or additional process steps. This significantly reduces assembly complexity, cycle time and leakage‑related quality risks in high‑volume EV production environments.

Plug & Seal delivers highly reliable sealing performance even under high operating and burst pressures, exceeding conventional O‑ring concepts. Its compliant sealing interface ensures effective compensation of misalignment and tolerance stack‑ups, enabling robust functionality in compact and hard‑to‑access battery cooling architectures.

With its compact design, high resistance to media and thermal loads (–40 to +80 °C) and integrated acoustic and mechanical decoupling, Plug & Seal is ideally suited for scalable applications in next‑generation EV battery cooling systems.