... smooth,neat •wiper seal 1.used for steering for binding machine 2.seal:assemble ring,Y-ring,O-ring,wiper ring, 3.port diameter:standard 4. ... Rod cylinders,welded cylinders and OEM cylinders.they are used for construction,mining, forestry, marine, demolition, military, material handling, agriculture, ... have long life, superior performance and highreliability. hydraulic cylinder for binding machine