- In conclusion, spark plug wires, though seemingly small, are integral to the functioning of an internal combustion engine. They serve as the conduit for the spark that ignites the fuel, propelling the vehicle forward. Understanding their importance and ensuring their proper maintenance can greatly contribute to the longevity and efficiency of any vehicle.
- The oil seal, located at the point where the piston rod enters the shock body, serves as a barrier between the hydraulic fluid and the external environment. Its primary function is to prevent oil leakage, ensuring consistent lubrication for the internal components. A damaged or worn-out oil seal can lead to oil leaks, causing a reduction in damping force and eventually, a less responsive and less stable ride.
Oil seals are commonly made from materials such as rubber, silicone, or polyurethane, with each material offering different properties and advantages. Rubber seals are flexible and cost-effective, making them suitable for a wide range of applications. Silicone seals offer high temperature resistance and chemical compatibility, while polyurethane seals are durable and abrasion-resistant.
Typically used in hydraulic high-stress applications where compounds under high pressure are exposed to wear, the benefits of polyurethane seals include:
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Depending on the application, premium lip materials may need to be used, such as Ethylene-acrylic (Varmac®). This material features good abrasion and dry running capabilities, higher heat capabilities than nitrile and polyacrylate, and better low-temperature performance than polyacrylate.