... for your safety high duration UL and NSF61 prompt delivery Rubber Speed Hump,Safe Road Material:NR high and low temperature ... resistance, anti-aging,wear-resistance ISO/TS16949 OEM1. Name:Rubber seep hump2. Material:NR,SBR,SIL,NBR,etc3. Application: road ... Strength, %60%82.9%2) Retention of Elongation, %60%95% Rubber road cone