Substance to be sealed - In recent years, the automotive industry has witnessed a remarkable transformation, driven by innovative technologies and cutting-edge solutions. One such innovation is the BR9ES Spark Plug, which has emerged as a game-changer in the field of engine performance and efficiency.
- PTFE Oil Seals – Are a relatively new oil seal, the use of polytetrafluoroethylene means they can withstand dry and unlubricated operations. They have a massive thermal range spanning from -130°C to more than 200°C and a strong resistance to chemicals, they are the future of rotary shaft seals.
With a helper holding the engine steady, remove the wedge supports, lower the engine and reconnect the mountings loosely.
- gaskets and rubber tubes.
- When replacing a spark plug coil, it is essential to use a high-quality replacement part that is compatible with the make and model of the vehicle. This will ensure proper function and performance. It is also recommended to replace all spark plug coils at the same time to prevent future issues and ensure uniform performance.
- 5. **Clean the valve cover** Use a clean cloth or paper towels to wipe away any dirt, debris, or old gasket residue from the surface of the valve cover. This will help the new gasket adhere better.
By first finding out the dimensions of the inner and outer diameters and the height of the bore, you have all the data for the correct size of the oil seal. Of course, the oil seal must also be able to withstand the pressure, temperature and medium it is exposed to within the seal during the manufacturing process. You can read more about this in our oil seal selection guide.

2) Special seal types and their features
Valve cover gaskets and head gaskets are essential components in automotive engines, serving distinct yet crucial roles in maintaining the integrity and functionality of the engine. The valve cover gasket seals the junction between the valve cover and the cylinder head, preventing oil leaks and contaminants from entering the engine. On the other hand, the head gasket seals the cylinder head to the engine block, ensuring the containment of combustion gases and the separation of oil and coolant passages.