... 1.material:CR,SBR ,EPDM.CR,NR,NBR,silicone,viton 2.size: proposal 3.hardness:60-75A SBR Rubber Bumpervibration nuts + rubberizedNR ... ,SBR,NBR,EPDM rubber + Zinc plated screw1) Materials: NR, CR ,SBR2) Characteristics: high ... colors availableWe can produce according to your samples or drawings. SBR Rubber Bumper