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Also, sealant should never be used on the housing and the installation guidelines, as discussed earlier, should be followed.
Selecting Quality Gaskets and Spark Plugs
Black spark plugs are one of the most important components in an internal combustion engine. They play a crucial role in igniting the fuel-air mixture that powers the engine, allowing the vehicle to start and run smoothly.


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What are rotary shaft seals?
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An oil seal is a type of mechanical seal used to prevent the leakage of oil from machinery components. The dimensions of an oil seal are usually specified in terms of its inner diameter, outer diameter, and thickness. For example, a 38x52x7 oil seal has an inner diameter of 38mm, an outer diameter of 52mm, and a thickness of 7mm.
The oils seals require certain prerequisites to be maintained for their proper working. They are as follows:
If the manifolds have been removed, refit them with new gaskets (See Exhaust manifold gasket replacement ).