- In addition to these benefits, double iridium spark plugs enhance engine performance by providing a cleaner burn. This results in smoother engine operation, reduced engine knocking, and enhanced responsiveness. They also contribute to a quieter, more comfortable ride due to their ability to maintain a stable spark under varying engine conditions.
- One of the key functions of a mechanical oil seal is to prevent the leakage of oil or grease from the rotating shaft of a machine. This is achieved through the use of a flexible sealing lip that makes contact with the shaft and effectively seals the gap between the shaft and the housing. The seal is typically made from a durable elastomeric material such as rubber or polyurethane, which is resistant to abrasion and can withstand high temperatures and pressures.
Furthermore, natural rubber gaskets are highly durable and long-lasting, making them ideal for applications that require frequent assembly and disassembly. Unlike synthetic rubber gaskets, natural rubber gaskets are less prone to degradation from exposure to heat, ozone, and UV radiation, ensuring a longer service life and reduced maintenance costs.

Another type of seal design has the metal encased in rubber (Figure 2.11).
This is a specific type of synthetic rubber that’s commonly used in o-rings, gaskets, oil seals, sterile & chemical resistant gloves, and other molded items. Viton has a high density and it possesses the widest temperature range of -40 degrees Fahrenheit to more than 400 degrees Fahrenheit. This is why it’s highly preferred as the best material for higher temperature applications.