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We are proud of our advanced elastomer technology which has enabled us to develop high voltage connectors for the energy market.

Our products are used worldwide to connect underground high voltage cables for electrical transmission and distribution.

The wide product range provides high voltage connectors with a range between 50kV and 550kV.

High voltage connectors

The ultimate example of a best in class elastomer solution

At Ruma, we develop, manufacture and supply a wide range of high voltage connectors. Our many years of experience in elastomer technology enables us to develop high-end solutions for the energy market.



As the world transitions towards improved environmental sustainability and clean energy utilization, we place critical importance on our environmental impact. We therefore strive to maximize the durability of our products in order to minimize environmental impact while simultaneously managing in-house energy consumption and supporting sustainable waste management practices.


R&D creates added value

Our solutions for the energy market are a good example of product development that requires all R&D elements: compound development, product development and process development.


Compound development

We are using a range of advanced polymers that meet the highest standards. Electrical conductivity, insulation and field control are integrated into one product. This has resulted in a product that meets the most demanding requirements.


Product development

The design of the moulds is made within the R&D department. State-of-the-art software is used for this, which further optimizes product performance.


Process development

The set-up of the production process is developed by our R&D department as well. This forms the basis for a stable production performance for our high-end products.


Contact us for more information or click on the button to read more about our R&D department.

Our goal:

Putting elastomers to work