An oil seal consists of:
2. Silicone – Used in specific applications where only light loads are applied.
The significance of the small rubber gasket extends beyond its functional purpose. Its standardization allows for easy replacement and maintenance, reducing downtime and repair costs. Moreover, it embodies the principle of simplicity in design—where efficiency does not necessarily require complexity Moreover, it embodies the principle of simplicity in design—where efficiency does not necessarily require complexity-15 °C to + 180 °C
⑥
For more severe oil-seal service at temperatures of 160°C (320°F) or higher for extended periods, more resistant fluoroelastomer compositions are required for long service life. High-fluorine VDF/PMVE/TFE elastomers, along with TFE/olefin FEPM elastomers, are much less susceptible to attack by oil additives. TFE/P fluoroelastomers have the requisite chemical resistance, but have low fluorine content, leading to relatively high swell and to soft vulcanizates with lower wear resistance than desired.
The primary function of a head gasket is to prevent the mixing of coolant and oil with the combustion chamber's high-pressure gases. It also maintains the necessary compression ratio, which is crucial for the engine's ability to generate power. Without a head gasket, the engine would suffer from leaks, leading to a decrease in efficiency, overheating, and potentially catastrophic failure.