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Without minor lip
There are several types of metal-to-oil seals available on the market, each with its unique design and application. Some of the most common types include1 .Material: There are 7 types of material used for oil seals, they are.
Material Code ISO 1629
An oil seal, also known as crankshaft retainer, is a small device, but essential to ensure the proper engine operation. It plays a key role in all moving parts of an engine, acting as a physical barrier. This mechanical seal fulfils the dual purpose of sealing a rotary shaft to maintain the necessary lubrication (avoiding leaks) and preventing other foreign matter from contaminating shafts and bearings in the rotary shaft equipment.
Silver spark plugs are a less common type of spark plug that is often used in racing and high-performance applications. They have excellent conductivity and heat transfer properties, making them ideal for engines that operate at high temperatures. Silver spark plugs are more expensive than other types but offer superior performance in extreme conditions.