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  • Spark plugs are designed with a central electrode and a side electrode, separated by a tiny gap. When voltage from the ignition system jumps this gap, it creates a spark, which in turn ignites the compressed fuel and air inside the cylinder. This ignition triggers a controlled explosion, driving the piston down and ultimately turning the vehicle's wheels or performing whatever task the machine is designed for.
  • Widely used in automobiles, electronics, aerospace, ships and other requirements of high 
  • Before removing the cover, note the positions of any pipes and wires round it or fixed to it, which have to be removed before it can be freed.

  • Figure 3: Sealing function of main lip radial load
    * KOYO is a registered trademark of JTEKT.


  • 2. Brass Brass is another popular material for metal-to-oil seals due to its good corrosion resistance, low cost, and ease of machining. It is commonly used in applications where the seal will be subjected to moderate pressures and temperatures.
  • 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.

  • Lip seals, also known as radial shaft seals, are the most commonly used type of oil seal. They consist of a flexible lip that seals against the shaft, preventing the escape of oil. Lip seals are simple in design and easy to install, making them a cost-effective solution for many applications.
  • In conclusion, the price of car spark plugs can vary widely depending on the type of plug, the quality of the material used, and the brand. While conventional spark plugs are relatively inexpensive, performance spark plugs and those made from platinum or iridium can be much more expensive. When choosing a spark plug, it's important to consider your vehicle's needs and budget, as well as the quality and reputation of the brand.