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- The choice of materials for metallic oil seals depends on the specific application requirements. Common materials used in the construction of these seals include stainless steel, carbon steel, aluminum, and brass. The sealing element, on the other hand, is typically made from materials such as nitrile rubber, fluoroelastomers, or PTFE, which offer excellent resistance to heat, chemicals, and wear.
Maintenance and Replacement of Gaskets
- Another advantage of metal cased oil seals is their ability to provide a secure and effective seal over a long period of time. The precise design and construction of these seals ensure a tight fit that prevents any leakage of oil or other fluids. This helps to maintain the efficiency and performance of the machinery or equipment in which the seals are installed.
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The major cause of extrusion and nibbling is stress caused by high pressure. This is commonly noticed when the oil seal has a chipped or nibbled look. In fact, in some cases, the surface of the seal tends to peel on its own, which makes it have a shaved look. What the stress does is that it increases the clearance gap between the mating edges, which causes the seal to get entrapped, and then leads to severe physical damage.
The group of oil seals used in dynamic applications include radial shaft seals that seal a rotating shaft around its circumference. They are also known as lip seals, but in this blog we will use the term oil seals.