The properties and uses of polyurethane oil seals

Polyurethane oil seal is a rod seal made of polyurethane raw materials. Different from polyurethane seals, it is at least one pair of cross-sections perpendicular to the axis of rotation. They slide relative to each other to form a device for preventing leakage.

（1）Polyurethane oil seal performance

Polyurethane oil seals are mainly used for hydraulic cylinders, which are easy to install and can scrape the dust adhering to the piston rod. The green urethane oil seal is slightly less hard, while the blue one has a higher hardness and can withstand greater pressure. Polyurethane oil seals have good physical and mechanical properties, wear resistance and oil resistance. It can excellently prevent the entry of external impurities from affecting the effect of polyurethane, so as to achieve excellent sealing performance. Polyurethane oil seals are the most commonly used seals in medium and high pressure hydraulic cylinders.

(2) Application of polyurethane oil seal

Polyurethane oil seals are mainly used in hydraulic cylinders, which are easy to install and can scrape off the dust pollution adhering to the piston rod. In addition, the most commonly used seal in medium and high pressure hydraulic cylinders is the polyurethane oil seal. It is suitable for the most severe working conditions, and can prevent the entry of external impurities, so as to achieve excellent sealing performance. It is the most commonly used rod seal in medium and high pressure hydraulic cylinders.

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