PTFE is special in that a pre-tensioned spring is not required. This is because the material returns to its original shape when heated, also known as the shape-memory polymers (SMPs) effect. These oil seals are also supplied as integrated parts, where it only needs to be installed as one component.
The valve cover gasket and spark plugs are integral components in the engine's ignition system. The valve cover gasket seals the valve cover to prevent oil leaks, while the spark plugs play a crucial role in igniting the air-fuel mixture within the combustion chambers. Proper sealing provided by the valve cover gasket is essential for maintaining the integrity of the engine, while reliable spark plugs contribute to efficient ignition and combustion, ensuring optimal engine performance.