- In conclusion, there are several different types of spark plugs available, each with its own advantages and disadvantages. Choosing the right spark plug for your vehicle can improve performance, fuel efficiency, and overall engine health. Whether you drive a daily commuter car or a high-performance sports car, selecting the right spark plug is essential for optimal engine performance.
- Despite their many advantages, sheet gaskets do have some limitations. For example, they are not as resilient as other types of gaskets, such as metal gaskets, and may need to be replaced more frequently. Additionally, sheet gaskets are more prone to creep and relaxation over time, which can compromise their sealing performance.
Carefully lift off the cover. If it sticks, gently tap it sideways with a soft-faced rawhide or nylon hammer, or with the heel of your hand.
- One of the key advantages of die-cut silicone gaskets is their ability to withstand extreme temperatures. They can maintain their integrity and properties in environments ranging from -100°C to 250°C (-148°F to 482°F), making them suitable for use in automotive, aerospace, and industrial machinery sectors. Their heat resistance also makes them ideal for use in cooking appliances and HVAC systems.
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.
FPM
Iridium spark plugs are becoming increasingly popular among car owners due to their superior performance and longevity compared to traditional copper spark plugs. These advanced spark plugs are made with a small center electrode made of iridium, a rare metal known for its strength and high melting point. This allows the spark plug to create a more consistent and powerful spark, resulting in better ignition of the air-fuel mixture in the engine.
The mating surfaces of the head or block must be perfectly clean, flat and smooth.
VMQ (silicone)
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.


Acrylate-natural rubber is its excellent heat and hot oil resistance. ACM is resistant to motor oils with modern additives, gearbox oil, lubricants etc. In addition there is the high oxidation and ozone resistance of a saturated polymer chain. Temperature range from -20 °C to +175°C.

Shaft Surface Finish
How are they used?
In this post, we’ll go over the fundamental things you need to know as a DIYer when working with oil seals.