Seals play an integral role in hydraulic cylinders by preventing the hydraulic fluid from leaking out of the cylinder while also keeping contaminants out. Over time, seals can become damaged or degraded due to exposure to extreme temperatures, pressure fluctuations, and abrasive materials. A compromised seal can lead to fluid leaks, which not only reduces the system’s efficiency but also can cause environmental concerns and increase operational costs.

1. O-rings These are circular rubber gaskets that create a seal between different components. O-rings are crucial for preventing fluid leakage and are commonly used in hydraulic systems.

Understanding Oil Seals

Seals for Agriculture

Oil seals, also known as grease or fluid seals, are critical components in various machinery and automotive applications. These seals play a vital role in ensuring the efficient and safe operation of engines, gearboxes, and other mechanical systems. Understanding the function of oil seals helps in appreciating their importance in mechanical design and maintenance.

Excavators are among the most versatile and robust machines in the construction and mining industries. Their performance heavily relies on the hydraulic systems within them, which control various functions such as lifting, digging, and pushing. At the heart of these hydraulic systems are the cylinder seal kits. Understanding the function, importance, and selection of these kits is crucial for maintaining the efficiency and longevity of an excavator.

The designation 20x35x7 refers to the dimensions of the oil seal. The numbers represent the inner diameter (20 mm), outer diameter (35 mm), and the thickness (7 mm) of the seal. The design of an oil seal is critical, as it must fit precisely to ensure a proper seal and prevent the ingress of dirt, dust, or moisture. The choice of material used for these seals often includes rubber compounds that enhance flexibility and resilience. Common materials include nitrile rubber (NBR), fluorocarbon rubber (FKM), and silicone, each chosen based on the specific application and operating conditions.

2. Protection Against Contaminants Hydraulic systems are susceptible to dust, dirt, and other contaminants that can significantly degrade performance. Oil seals keep these harmful particles out of the hydraulic motor, ensuring smooth operation and prolonging the lifespan of the motor.

The designation 25% 2035 7 refers to specific dimensions and material characteristics of the oil seal. In the mechanical context, the first number often represents a percentage of the sealing area, while the subsequent figures usually denote the size and type of the seal. The 25% indicates a high sealing efficiency, which is essential for maintaining a controlled environment and minimizing leakage. The numbers 2035 can denote dimensions such as inner and outer diameters or other relevant measurements, emphasizing the oil seal's suitability for particular machinery. Finally, “7” may refer to the design style or material hardness, providing insights into its durability and resistance to wear and tear.