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Hebei Hankai metric rod wiper
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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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Reflective granules are a special material that can reflect sunlight and reduce the heat absorbed by the building, thereby reducing the indoor temperature and achieving energy-saving effects. In roof design, Reflective granules are usually added to roof coatings to form a reflective coating. This coating can not only improve the reflectivity of the roof and reduce the heat island effect, but also extend the service life of the roof material, because the reduced heat absorption means that the aging rate of the material will slow down.