An oil seal, primarily constructed from rubber, is a vital sealing device designed to prevent the ingress of contaminants and the egress of lubricants or other fluids. The rubber material, chosen for its unique properties, forms the core of this seal, providing a flexible barrier that adapts to various surfaces and withstands harsh conditions.
Figure 1: Types of sealing devices
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.Oil seals serve as a barrier, preventing oil from escaping the confines of the machinery while also stopping contaminants from entering