... aslo do as per customer's request)3.piston ring characteristics:1)wear-resistant2)high temperature resistant3)reduce fuel ... consumption4)long working life4.Our piston ring model as follows:CommodityPart NumberCummins piston ring6BT,6CT,NT855 ... ringOM601, OM602, 200D, 220D, OM615, OM603, OM616, M102, OM366, OM314, OM352, OM441, OM442, OM360, OM412, OM401, D2840, OM422, OM355, ...