Crosile® 69C it is a mixture of Crosile® 69C silane coupling agent and carbon black with the same function as Crosile® 69C but easier to operate. Crosile® 69 can improve the physical and mechanical properties of rubber and greatly strengthen tensile strenth, antitearing strenth, abrasion resistance, reduce the permanent deformation and viscosity of gross rubber, improve process property. The suitable polymer include NR,IP,SBR,BR,NBR,EPDM, etc.