rubber shock block 1.size: any sizes are optional. 2.material:NR, ... .hardness: 40-75A 4.tensile strenght:5-20MPA rubber shock block Features: 1) Material: NR,NBR,CR,SR,EPDM,SBR ... , especially for automobiles and motorcycles 3) Dampen vibration, prolong machine life, good rigidity and protection 4) Professionally customize all kinds ... according to customer’s drawing and demands. rubber shock block