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The spark plug, typically made from materials like nickel-alloy or iridium, is nestled within the engine's combustion chamber. Its primary function is to generate the spark that ignites the air-fuel mixture, initiating the combustion process. This spark, timed precisely by the ignition system, propels the piston, driving the chain around the guide bar, ready to cut through even the toughest wood.
• Shape
(hydrodynamic ribs)
• Rotational speed
• Oil viscosity, etc.

When the oil seal material and the chemical are not compatible, there will be a chemical attack, which increases at high temperatures. The only way to remedy this is to select the right material for your application. If you’ll be dealing with harsh chemicals, choose oil seals that are made with reliable materials for their compatibility.

Oil seals are commonly used in a wide range of applications, including automotive, aerospace, and industrial machinery. They are designed to prevent the leakage of oil and other fluids from the working parts of a machine, such as a motor or gearbox. In addition to preventing oil leakage, oil seals also help to keep out contaminants and dirt, which can cause damage to the machinery.

Some distributors can be removed without separating the gears, and so the arm does not turn.

Once you have selected the most suitable seal available, considering the environment, temperature, shaft speed, pressure, lubrication availability, as well as the size, of course, the seal should be stored adequately and then fitted properly. Here are a few suggestions that could help:-