Flat Seat And Cone Seat Type Spark Plug

- Aug 07, 2019-

Flat seat and cone seat type spark plug

The so-called flat seat type, that is, the spark plug mount (the large cylindrical end face of the housing) is a flat surface, and there is an elastic sealing gasket between the plane and the cylinder when installed. Some engines are designed to be more compact or to place more parts (such as adding a valve) without leaving a large installation space for the spark plug, which forces the spark plug to reduce the radial size and even eliminate the outer sealing washer, replacing it with a "cone seat" The "flat seat".