... sizeMaterialNBR,EPDM,SILICONE, SBR,etc.CertificationSGS,it is complied with ROHS standardPackinginner packing is plastic bag outer packing is ... is accepted4,We have SGS Certification,it is complied with ROHS standard5,OEM orders are welcomeDelivery time15-20 working ... can design and manufacture the rubber and plastics goods with especial properties for extended customers primarily for petroleum industry ...