... used in tyres, cycle tire, rubber overshoes, plastic hosoe tapes, conveyors, rubber tubes, black sole, rubber lines, rice polishing rollers, extruded products, medical products and other ... 1232.1-2000 ASTM IRB No.7300%Modulus (145),MPa25min9.8-13.89.3-14.3GB/T 8656-1998 ASTM IRB ...