... : NR,Silicone, NBR, EPDM, etc 3.Different sizes Product NameNR conveyor rollerCertificateISO9001:2008Country of OriginChinaAdvantagea. Ozone and chemical resistanceb. High temperature ... ,SBR ,SR ,CR ,IIR ,etc.PackingInner packing is by plastic bag outer packing is by carton and woodenPayment termT/T, L ...