- The heart of any internal combustion engine lies in its spark plugs, and the double iridium variant takes this role to a new level. The term double iridium refers to the use of two iridium electrodes, a material known for its extraordinary hardness, high melting point, and exceptional electrical conductivity. This design not only enhances the spark plug's lifespan but also significantly improves its igniting capability.
However, rubber-cased seals do have limitations. For example, during installation, shear stresses can build up between the seal and housing wall, causing the seal to release itself.
Rubber covered

oil valve cover gasket. It is important to ensure that the gasket is installed correctly and that the valve cover is tightened to the manufacturer's specifications to prevent leaks.
Installing and replacing the 75x100x10 oil seal is a straightforward process that can be done by maintenance personnel with basic mechanical skills. It's important to ensure that the shaft and housing where the oil seal will be placed are clean and free of any debris or damage. Proper lubrication of the shaft is also crucial to prevent premature wear of the oil seal.


For more detailed information, please see the following:
Names and functions of seal components



Today, traditional oil seals have to compete with a new variant oil seal, which is used in most modern engines.



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