- Spark plugs play an essential role in the automotive industry, serving as the heartbeat of internal combustion engines. These small yet critical components ignite the air-fuel mixture in the engine's cylinders, thus propelling the vehicle forward. A well-functioning spark plug is the key to a smooth, efficient, and eco-friendly driving experience.
- The Unsung Hero of Industry The Small Rubber Gasket
The sealing lip is always made of a rubber or synthetic material. For oil seals with a rubber outer case (R, RST, GR, GRST), the rubber quality of the sealing lip and the outer case are the same.
The spring shown in the figure is known as a garter spring, and it maintains tension on the sealing lip of the seal. Garter springs are closed coil springs used in the form of a ring, the ends of which are connected together as shown in Figure 2.10.

As type C with dust lip
In addition to the cost of the spark plugs themselves, it is also important to factor in the cost of labor for installation. If you are not comfortable working on your car yourself, you may need to pay a mechanic to install the spark plugs for you. The cost of labor can vary depending on the shop and location, so it is a good idea to get quotes from multiple places before making a decision.