Stainless Steel Cylinder Piston 1.30mm ID, 80MM OD, 53 H 2.Used for hydraulic cylinder 3.Material: 8620 Stainless Steel Cylinder Piston Details: 1). Piston parts are used in hydraulic cylinder, farm machinery etc.2). All seals are manufactured to US specification.3). Piston Finish: Fe/Zn Bright chromating min 25μ ,Thermal treated, rust prevents, ting oil, hot galvanization, cold galvanization, ...