TC / SC Series Auto Oil Seals

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What are TC oil seals and SC oil seals? How can ASA TC and SC types oil seal applicate in the industry?

ASA TC oil seal is a shaft sealing solution featuring a single metal cage coated in rubber. This design includes a primary sealing lip with an integrated spring, complemented by an additional anti-pollution sealing lip. The benefits include effective static sealing, compensation for thermal expansion, tolerance for greater roughness in housing, and a reduced likelihood of corrosion.

On the other hand, the ASA SC oil seal features a single lip skeleton design, with a sturdy inner shell that boosts the oil seal's rigidity. This variant is particularly well-suited for larger oil seals designed with a back fit for enhanced sealing efficiency. Its design consists of a sealing lip and a spring, all while ensuring a low coefficient of friction.

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PD oil seal and TC oil seal type are distinct. PD and TC are codes used to differentiate between these models, indicating their specific applications.

Both the skeleton and spring of the oil seal are crafted from metal, while the primary sealing lip is made from rubber. Oil seals can be produced using various types of rubber tailored to specific environmental conditions to meet sealing requirements. NBR (nitrile rubber) is the most commonly used oil-resistant rubber, renowned for its effectiveness and affordability, making it a popular choice for seals and O rings. Other types of rubber utilized in oil seal manufacturing include polypropionate rubber, silicone rubber, fluoropolymers, and polytetrafluoroethylene.

TC oil seal refers to a double lip oil seal, featuring a rubber exterior fully supported by a self-tightening spring. Generally, when discussing oil seals, it typically refers to TC skeleton oil seals.

The prefix PD denotes a specific model of oil seal utilized by manufacturers. It is frequently indicated in shorthand before the specifications, such as W (no spring type), PD (low-speed general type), PG (high-speed general type), SD (low-speed double lips), DG (high-speed double lips), and more. The standard specification of an oil seal is given by dxDxH (inner diameter X outer diameter X height) in millimeters.

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