- A repair manual specific to your vehicle
- 2
- In conclusion, the percentages in oil seals denote a fine-tuned balance between sealing efficiency and mechanical efficiency. Whether it's the robustness of a 55% seal, the versatility of an 80% seal, or the low-friction properties of a 10% seal, each plays a vital role in maintaining the integrity of industrial systems. As technology advances, so does the sophistication of oil seals, further underscoring their importance in modern industry.
- One of the main functions of the valve cover gasket is to prevent oil leaks. The gasket forms a tight seal between the valve cover and the cylinder head, ensuring that oil does not escape from the engine. Oil leaks can lead to a loss of lubrication in the engine, causing excessive wear and damage to engine components. By using a high-quality valve cover gasket like the c15, you can prevent oil leaks and keep your engine running smoothly.
Operating temperatures for engine oil seals (see Fig. 14.11 and cross-section of lip seal with garter spring in Fig. 14.22) vary widely, depending on engine design and location within the engine. Typically, the rear crankshaft seal is subjected to much higher temperatures than the front seal. Oil sump temperatures vary considerably, depending on provisions for oil cooling. This allows use of hydrogenated nitrile (HNBR), silicone, or acrylic elastomers for some seals in relatively low-temperature environments (120–140°C or 250–284°F). Standard fluoroelastomers (FKM), bisphenol-cured VDF/HFP/TFE terpolymers with 68–69% fluorine content, perform well in oil service up to about 160°C (320°F). More resistant fluoroelastomers are necessary for reliable long-term performance in more severe environments.
2. PRESSURE: Oil Seals cannot endure a lot of pressure. You need to understand your machinery’s pressure capabilities and ensure you use the correct seal to withstand its pressure levels.
Advantages:
– Good static sealing
– Compensation of different thermal expansion
– Reduced risk of fretting corrosion
– Effective protection against air side contaminants
– Higher bore surface roughness is allowed
– Installation in split-housings
– Modern lip design provides low radial forces