One of the main advantages of hex head self-tapping sheet metal screws is their versatility
- Low friction properties
- Furthermore, the B20 series valve cover gasket helps to maintain compression within the cylinder head
b series valve cover gasket. This is essential for the proper functioning of the engine, as it ensures that the combustion process occurs efficiently and effectively. Without adequate compression, the engine may run poorly, consume more fuel, and produce less power.
- Benefits of Using Lip Seal Gaskets
- For even higher performance, some drivers opt for iridium spark plugs. Iridium is one of the strongest materials used in spark plug construction, making iridium spark plugs extremely durable and long-lasting. These plugs also provide a more powerful spark, resulting in improved engine performance and fuel efficiency
different types of spark plugs. These problems can be overcome through a better understanding of the types of sealing materials available, redefined selection procedures and the consistent application of sound replacement and maintenance practices.
ERIKS type GV (type C according to DIN) is equivalent to type M, but is a heavy-duty version with a double metal casing. This can be a useful solution with larger diameters in more demanding applications. There is also a version of this type with a dust lip; the GVST (type CS according to DIN).
For more detailed information, please see the following:
Shaft and Bore Tolerance

The construction of an oil seal is a testament to meticulous engineering. Each oil seal primarily comprises two core components: the sealing element and the metal case. The collaboration of these parts brings about the seal’s functionality and effectiveness. A garter spring may also be included as an available feature, providing an extra layer of operational support.

Table 5: The major special seals, their shapes, and their features
The metal case and spring material used in the oil seal should be selected based on the substance to be sealed.
Table 6 shows how to select the metal case and spring materials.
There may be a thick spacer gasket between two thin paper ones. Check the spacer for cracks. If it needs replacing, be sure the new one is the right thickness, because this governs the fuel-pump lever stroke .
Leather Oil Seals - Leather Seals, also known as Type L Oil Seals, are most common in components that are subject to dirt and poor lubrication. Since they come pre-lubricated and are able to absorb fluids, leather oil seals are able to provide sealing properties in conditions that synthetic rubber is unable to.
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.

Conventional oil is the most commonly used type of oil. It is ideal for light-duty, late-model cars with low to average mileage and a simple engine design.