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Hebei Hankai high pressure rotary seal
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The primary function of an oil seal for a rotating shaft is to retain the lubricating oil within the system and prevent it from leaking out. This is important for maintaining proper lubrication of the bearings and moving parts, which helps to reduce friction and wear, and prolong the life of the equipment. Without a properly functioning oil seal, oil leakage can lead to equipment failure, costly repairs, and downtime

oil seal for rotating shaft.

oil seal for rotating shaft.
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The material selection for oil seals is crucial as it determines their performance, durability, and compatibility with various fluids. Common materials used in oil seals include nitrile rubber, fluoroelastomers, silicone rubber, and polytetrafluoroethylene (PTFE). Nitrile rubber is widely used due to its good chemical resistance, oil resistance, and moderate temperature range Nitrile rubber is widely used due to its good chemical resistance, oil resistance, and moderate temperature range
Nitrile rubber is widely used due to its good chemical resistance, oil resistance, and moderate temperature range Nitrile rubber is widely used due to its good chemical resistance, oil resistance, and moderate temperature range
oil seal tcn. Fluoroelastomers, such as Viton, offer excellent chemical and heat resistance but are more expensive. Silicone rubber is known for its flexibility and resistance to extreme temperatures, while PTFE is highly resistant to chemicals and has low friction coefficients.


There are several types of seals used in gearboxes, each with its own unique design and function. O-rings, for example, are commonly used to provide a tight seal between two moving parts. They are made of a resilient material and can withstand high pressures and temperatures. Another type of seal is the lip seal, which consists of a flexible rubber or plastic lip that creates a seal against a rotating shaft. Lip seals are often used in applications where the shaft is subject to high speeds or vibrations Lip seals are often used in applications where the shaft is subject to high speeds or vibrations
Lip seals are often used in applications where the shaft is subject to high speeds or vibrations Lip seals are often used in applications where the shaft is subject to high speeds or vibrations
gearbox seals.


Shaft oil seals typically consist of a flexible sealing lip made from elastomeric materials such as rubber, polyurethane, or silicone, encased in a sturdy outer shell. The sealing lip makes contact with the rotating shaft, creating a barrier that effectively retains lubricants while blocking unwanted particles. The design may include additional features such as garter springs to maintain contact with the shaft and improve sealing effectiveness over time.
shaft oil seal
