rubber shock block 1.size: any sizes are optional. 2.material:NR,NBR ... .hardness: 40-75A 4.tensile strenght:5-20MPA rubber shock block Features: 1) Material: NR,NBR,CR,SR,EPDM,SBR, ... anticorrosive liner, special rubber products, rubber pad of sleeper for railway, composite base plate, etc. Besides, the company also develops the ... products according to customer’s drawing and demands. rubber shock block