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2015
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The outer part of an oil seal is made of metal or rubber, depending on the intended application. Metal-cased seals are a cost-effective option used when the housing bore is made of the same material, allowing for equal expansion and contraction of the materials during use. Rubber-cased oil seals provide a tight fit and are commonly used when metal-cased seals have the potential to fail. They are corrosion-resistant and capable of withstanding extreme temperatures and pressures.
Lift off the cloth, making sure no debris falls into the valve gear.
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jet engine spark plug. On the other hand, a faulty spark plug can lead to misfires, reduced engine performance, and even engine damage.