Oil seals are used in a wide range of applications, from automotive engines and transmissions to industrial machinery and household appliances. In vehicles, for instance, oil seals are commonly found in engines, differential housings, and wheel bearings. Their presence is critical in ensuring that these components operate efficiently and safely.
The design of high-pressure rotary shaft seals typically includes a flexible sealing lip that makes contact with the rotating shaft, combined with a robust outer component that holds the seal in position. The materials used in these seals must be durable and resistant to wear, heat, and chemicals. Common materials include elastomers like nitrile rubber, fluorocarbon rubber, and special composites designed for high-performance situations.
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.
Hub dust seals are typically made of a durable rubber or silicone material that is designed to create a tight seal around the hub assembly. This prevents any debris from entering and causing damage to the bearings and other sensitive components inside. Without a properly functioning dust seal, contaminants can work their way into the hub, leading to increased friction, heat, and ultimately, costly repairs.
Hydraulic cylinder seals play a crucial role in the functioning of hydraulic systems. They serve two primary purposes to retain hydraulic fluid within the cylinder and to prevent contaminants from entering the hydraulic system. Common types of seals include piston seals, rod seals, and wipers. Each type is designed to withstand specific pressures, temperatures, and fluid characteristics. Failure of these seals can result from several factors, including wear from friction, chemical degradation due to exposure to harsh fluids, and environmental factors such as dirt and moisture.