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The comfort requirements regarding vibrations and noise emissions from the exhaust systems of new generations of cars are increasing. In order to decouple the engine from the exhaust system and to allow specified movement, flexible coupling elements are employed. The Burex element is a high tech component to reduce vibrations and noise emissions. The construction allows a small metal substrate to be integrated into the element. This combination can be used as a start-up converter for gasoline or diesel engines. This paper describes the performance of the element with regard to noise emissions, vibration reduction and mechanical durability.