... convoy roller material:metal(steel),rubber type:NR,NBR,SBR,CR,EPDM,Slicone silicone rubber rollerfunction:used for matallurgy,mine ... and metallurgy, mining and other industries traction roller type.* Nitrile rubber roller:a good oil resistance, and wear-resistant, ... chemical fiber, wood processing, plastic processing machinery.* Silicone rubber roller: to use its high temperature resistance, ozone, ...