Engine part piston ring 1.Top quality, best price 2.Model: ... ,yamar,kubuta,,UTB,kubota,MTZ,Massey Ferguson,KOMATSU Piston Ring for engine part Material CharacteristicsCr-MO/CR-MO-Cu Cast lronDuctile lronAbrasion ... Dovetail Surface/Double Sovetail SurfaceMicro Pyramidal FaceHeteromrphic Joint Piston Ring for engine part