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The function of a hydraulic wear ring is to guide the piston and piston rod of a hydraulic cylinder, absorbing transverse forces. At the same time, it prevents metal-to-metal contact, optimizing the performance of the sealing system. Tufnol bearing materials are widely used where tough, wear resistant components are needed. They give good service under a very wide range of operating conditions, including continuous temperatures from cryogenic levels to well over 100�C and in a wide variety of situations where resistance to corrosion is needed.
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