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Polyacrylate
Better heat, oil and chemical resistance than NBR
It is recommended for use in oil which contains load bearing additives such as EP gear oils
The reasons for the birth of this new generation of seals is that integrated oil seals reduce the manufacturing time of series production engines. Therefore, significant time savings are achievable when replacing the radial crankshaft seals.
The material composition of an oil seal is also essential. Typically, Oil Seal 20x35x7 is made from a combination of rubber (such as NBR, HNBR, or FKM) for flexibility and resilience, and a metal insert for strength and durability. The rubber compound allows the seal to adapt to different temperatures and chemical environments, while the metal reinforcement provides resistance against pressure and wear.Metal cased design
An oil seal, at its core, serves as a barrier, preventing the leakage of lubricants while also keeping contaminants like dust and debris from entering mechanical systems. The 35x72x10 dimensions denote the size of the seal, with '35' indicating the inner diameter, '72' representing the outer diameter, and '10%' being the lip thickness. The '20' typically refers to the oil seal's material composition or specific properties, which could denote a certain percentage of an additive or material blend. The primary function of the valve cover gasket is to create a seal between the valve cover and the engine block. This seal prevents oil from leaking out of the engine's main gallery and into the combustion chamber. The gasket also prevents coolant from entering the engine oil, which can cause oil to thicken and lose its lubricating properties.