... block 1.size: any sizes are optional. 2.material:NR,NBR,CR, EPDM 3.hardness: 40-75A 4.tensile strenght:5 ... -20MPA rubber shock block Features: 1) Material: NR,NBR,CR,SR,EPDM ... of rubber produc6ts in accordance with clients' designs and drawings 5) Low quantity order accept 6) Different sizes and shapes ... to customer’s drawing and demands. rubber shock block