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Hebei Hankai hydraulic gear pump seal kit
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The dimensions of the oil seal, 20x35x7, refer to its inner diameter, outer diameter, and thickness. These specifications determine the compatibility and performance of the seal in different applications. The size of the oil seal must be carefully matched to the shaft or housing it is intended to seal to ensure a proper fit and effective function.
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In addition to material, oil seals are also categorized based on their design and construction. The most common types include lip seals, mechanical seals, and hydraulic seals, each designed for specific applications and conditions. Lip seals are the most basic type and consist of a flexible lip that contacts the shaft to prevent leakage. Mechanical seals, on the other hand, utilize a rotary or stationary face to create a seal, while hydraulic seals are used in hydraulic systems to prevent fluid from leaking

20 35 7 oil seal.

20 35 7 oil seal.
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One of the key challenges in shaft oil seal design is to balance the competing demands of sealing effectiveness and shaft mobility. If the seal is too tight, it can impede the shaft's rotation, leading to increased friction and heat generation. On the other hand, if it is too loose, it may not be able to prevent oil leakage effectively On the other hand, if it is too loose, it may not be able to prevent oil leakage effectively
On the other hand, if it is too loose, it may not be able to prevent oil leakage effectively On the other hand, if it is too loose, it may not be able to prevent oil leakage effectively
shaft oil seal. Therefore, careful consideration must be given to the seal's geometry, material properties, and installation process to ensure optimal performance.


For example, nitrile rubber oil seals are commonly used in automotive applications due to their durability and resistance to oil and grease. Silicone rubber oil seals are preferred for applications that require high temperatures, as they can withstand temperatures up to 400 degrees Fahrenheit. Polyacrylate oil seals are known for their resistance to heat, oil, and chemicals, making them ideal for more demanding industrial applications.