elastomer rubber rail pad 1. Provides electrical résistance between rail and sleeper. 2. Provides conforming layer between rail and sleeper to avoid contact areas of high pressure. 3. Reduces vibration and impact transmission from rail to sleeper by providing resilience and impact attenuation. 4. Properties are stable over a wide range of operating temperatures during life. 5. It does not deform, abrade or move out of fastening system under dynamic loads.