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Seals and O-rings are two different sealing components.

Seals are components that prevent leakage and achieve sealing effects through appropriate shapes and materials, which can be used in various equipment and systems. There are many types of seals, including mechanical seals, packing seals, hydraulic seals, etc. They can be selected according to different application scenarios and requirements.

The O-ring is a specific type of rubber seal with a circular cross-section, hence it is also known as an O-ring. It has various excellent characteristics, such as small size, easy assembly and disassembly, both dynamic and static seals are available, static seals have almost no leakage, single piece use of bidirectional seals, low dynamic friction, and low price. O-ring is widely used in hydraulic and pneumatic transmission systems and is one of the indispensable sealing components in these systems. It can be installed in various shapes of grooves and is suitable for various sealing forms and materials for various purposes.

Therefore, although seals and O-ring seals are both components used to prevent leakage, they differ in specific application scenarios, shapes, and materials. When selecting and using, it is necessary to select appropriate components based on specific equipment and system requirements.