With ultra-low sensitivity to environmental factors, e.g. water, frost and acid rain, Rockdelta RX stone wool based anti-vibration mats exhibit outstanding efficiency and durability even after decades of operation under harsh climatic conditions. This has been verified, for instance, by an exhaustive Norwegian field study of the long-term functional performance of a track that had been vibration isolated in 1978 using stone wool based anti-vibration mats. - Also documented by the Technical University of Munich in approved test according to DIN 45673-7.
