product name: wet produced n220 no.: 13120584216 type: wet and hard produced series n220 control specifications: iodine absorption number 121(7 more or less) oil absorption number 114(7 more or less) tinting strength 108--124 heating loss ≤2.5 300%modulus at a definite elongation --2.3(1.6 more or less) n220 is suitable for each kind of rubber, the resistance to wear is higher than n330 10%-20%, it makes colloidal particle rubber high longitudinal strength and the anti- peel strength, and has the certain electrical conductivity. it has mainly been used in the carrying tyre, tread rubber, and rubber product with high strength needed, radial tire,bias tire and high wear-resisting.