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Hauser GmbH seals are materials or components that prevent leakage of fluids or solid particles from adjacent mating surfaces and prevent external contaminants such as dust and moisture from entering machinery. The recommended storage temperature for seals is below 30 °C to avoid high-temperature aging. Seals are classified into static seals and dynamic seals. Their main function is to prevent leakage of fluids or solid particles from adjacent mating surfaces and to prevent external contaminants such as dust and moisture from entering machinery. Static sealing refers to the tight closure of a sealed chamber, sealed container, or seals used for letters and wills.

Hauser GmbH seal operating principle

An oil film controlled by the lip of the oil seal exists between the oil seal and the shaft; this oil film has fluid lubrication characteristics. Under the action of liquid surface tension, the stiffness of the oil film causes it to form a meniscus at the air-contact end, preventing leakage of the working medium and thereby achieving sealing of the rotating shaft. The sealing capability of an oil seal depends on the thickness of the oil film on the sealing surface. If the thickness is too great, the oil seal will leak; if too small, dry friction may occur, causing wear on the oil seal and shaft. If there is no oil film between the sealing lip and the shaft, overheating and wear are likely. Therefore, during installation, some oil must be applied to the sealing ring, and the skeleton oil seal must be kept perpendicular to the shaft axis. If not perpendicular, the sealing lip will wipe the lubricating oil off the shaft, leading to excessive wear of the sealing lip. During operation, slight seepage of lubricant from the housing is ideal to maintain an oil film on the sealing surface.

Hauser GmbH seal functions

The general function of a skeleton oil seal is to isolate lubricated components in transmission assemblies from output components, preventing lubricating oil leakage. It is typically used on rotating shafts and is a type of rotating shaft lip seal. The skeleton acts like rebar in concrete components, providing reinforcement and allowing the oil seal to maintain its shape and tension. Based on skeleton type, they can be classified as inner skeleton oil seals, outer skeleton oil seals, and exposed inner/outer skeleton oil seals. Skeleton oil seals are made from high-quality nitrile rubber and steel plates, offering stable quality and long service life. They are widely used in automobiles and motorcycles on crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels, and other locations. 1) Prevent sand, dust, water vapor, etc., from entering bearings from the outside; 2) Restrict lubricating oil leakage from bearings. Requirements for oil seals include dimensions (inner diameter, outer diameter, and thickness) that comply with specifications; appropriate elasticity to properly grip the shaft for sealing; heat resistance, wear resistance, good strength, media resistance (to oil, water, etc.), and long service life.

Hauser GmbH seal precautions

1) Before designing grooves, carefully read the product descriptions for each series to determine whether the product uses an integral groove or a split groove. During seal installation, avoid sharp edges. Installing bore seals into integral grooves requires installation tools. Designers must consider groove dimensional accuracy, surface roughness, extrusion gaps, and other parameters; refer to product instructions, diagrams, and dimension tables for details. 2) Before installing seals, ensure the sealing grooves are free of contaminants and cracks. Apply assembly oil to both the sealing grooves and the seal surfaces. Install the seals gradually in sequence. Avoid sharp edges during installation, align the seals properly, and prevent twisting or skewing. For split grooves, tighten the pressure cover last.

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