In addition to reach and depth, drill bit extension rods also offer increased stability and control during drilling
- The black spark plug is not a different type of spark plug in terms of function; it is simply a standard spark plug that has been coated with a black finish. This finish is not only aesthetically pleasing but also serves a functional purpose. The black coating helps to dissipate heat more effectively, which can lead to improved performance and a longer lifespan for the spark plug.
What are Oil Seals – A guide to Oil and Rotary Shaft Seals
Car Engine Oil Seal: Importance and Impact
A rubber or PTFE sealing lip
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.
If these specific tools aren’t available, it’s entirely possible to correctly seat an oil seal in its housing using a hammer. Ideally, this hammer will be plastic or rubber due to it’s more forgiving nature. Using this and a strike plate that covers the entire seal will lend you accuracy while driving it in. The downside to this method is the inability to drive the seal any further than the strike plate will allow.



As type A with dust lip

Replacing the sump gasket
