- Step 1 Gather the necessary tools and materials.
- The f6tc spark plug is designed to provide efficient and consistent spark production, ensuring smooth engine operation and optimal fuel combustion. Its construction features a durable metal shell and high-quality insulator, which work together to resist extreme heat and pressure within the combustion chamber. This robust design allows the f6tc spark plug to withstand harsh engine conditions and maintain its performance for an extended period.
If you find a gap, measure it by sliding a feeler gauge under the ruler.
Lubricant
The quality of the rubber or rubber fabric used to make an outer case is the same as the quality of the rubber sealing lip. Fabric reinforced rubber is, as the name suggests, rubber reinforced with a fabric.
Since oil seals are versatile and multipurpose, they are suitable for all types of mechanical engineering situations, e.g., manufacturing units, automobiles, pumps, etc.

What is Oil Seal
Oil seals close spaces between fixed and moving parts and protect all kinds of ball and roller bearings. They keep rotating shafts and bearings from pollution and corrosive materials, and also prevent lubricants, oils, and liquids from leakage. An oil seal can have a single lip, double lip and even triple lip, so single lip seal is one lip to seal around the shaft, double lip seal is two lips sealing around this, and triple lip seals have three lips to seal.
a) The shaft on which the oil seal is to be mounted should be ground with the surface finish or surface roughness between 0.2 to 0.8 Microns. It is best for the shaft to be hardened atleast to 40 – 45 HRc in order to prevent groove formation on the shaft due to the pressure exerted by the spring.