Piston seal is usually annular and installed on the circumference of the piston. It is designed to prevent fluid from leaking from the high-pressure side to the low-pressure side during the movement of the piston. Its working principle is based on the close contact between the sealing material and the inner wall of the cylinder and the surface of the piston. When the piston reciprocates in the cylinder, the seal will deform with the movement of the piston, always keeping the sealing interface in place to prevent fluid leakage.

Piston seal

2. Material properties

Rubber

Commonly used rubber materials such as nitrile rubber (NBR) have good oil resistance and wear resistance. In hydraulic systems, various hydraulic oils are often exposed. NBR Piston seal can work stably in an oil environment for a long time to ensure the sealing of the system.

Polyurethane rubber has the characteristics of high hardness and high strength, and is suitable for use in high-pressure systems. It can withstand large pressures without easily deforming or damaging, ensuring the sealing effect of the piston.

Engineering plastics

PTFE Piston seal has an extremely low friction coefficient, which makes the resistance of the piston very small during movement, reduces energy loss and improves the efficiency of the system. At the same time, PTFE also has excellent chemical stability and can resist corrosion from a variety of chemical substances.

3. Application areas

Piston seals are widely used in various industrial equipment, such as hydraulic cylinders in engineering machinery, piston seals in automotive brake systems, and pneumatic actuators in automation equipment. In these applications, Piston seals ensure the accuracy, reliability and efficiency of the system, thereby ensuring the normal operation of the entire equipment. Whether in high temperature, high pressure or harsh chemical environment, the right Piston seal can provide reliable sealing protection for the system.

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Piston seal

As the leading designer and manufacturer of rubber parts and seals, DESIOR Rubber has a wide range of products to meet all your sealing needs. From our vast o-ring inventory of virtually any shape and size to our complex, custom sealing solutions, we have precisely what you need for any sealing application.

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