Oil seals serve an important function in preventing lubricant leaks by closing in the spaces between the parts of the rotary shaft equipment. They also prevent dirt, dust, and other contaminants from clogging up the unit. Having them properly installed enables engines, pumps, and pipes to operate more efficiently.
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.
- In conclusion, cork rubber gaskets are a highly versatile and effective solution for a wide range of sealing applications. Their ability to conform to irregular surfaces, resistance to chemicals and UV radiation, thermal stability, low coefficient of friction, and eco-friendliness make them an excellent choice for a variety of industries. Whether you need a gasket for your car, your home, or your business, cork rubber gaskets are sure to provide a reliable and long-lasting solution.
What are Oil Seals – A guide to Oil and Rotary Shaft Seals
- In addition, the A5RTC spark plug is easy to install and replace, making it a convenient option for both professional mechanics and DIY enthusiasts. Its compatibility with a wide range of engines also makes it a versatile choice for various applications.
Silicone (VMQ) Oil Seals
This is one of the frequent reasons for oil seal failure, and this is majorly because of the volatility of any of the elastomer’s constituents. These causative constituents may be part of the elastomer formulation, or gases that got entrapped in the elastomer during the molding process. The deceiving fact about this failure is that sometimes the oil seal won’t show any visual sign of out-gassing, however, sometimes when the out-gassing is extreme, they shrink.